Exception in thread "AWT-EventQueue-0" java.lang.StackOverflowError

alright here is my code:

this is from BaseDeDatos:

package Clases;

import java.sql.Connection;































































































































































































































































































































































































































































































































import java.sql.DriverManager;































































































































































































































































































































































































































































































































import java.sql.ResultSet;































































































































































































































































































































































































































































































































import java.sql.Statement;































































































































































































































































































































































































































































































































import Clases.GetandSetDatos;































































































































































































































































































































































































































































































































import Gui.VentanaAgregarDatos;































































































































































































































































































































































































































































































































import Gui.VentVerIngresosMes;































































































































































































































































































































































































































































































































import Gui.VentReporte;































































































































































































































































































































































































































































































































import javax.swing.table.DefaultTableModel;































































































































































































































































































































































































































































































































public class BaseDeDatos {































































































































































































































































































































































































































































































































VentanaAgregarDatos vad = new VentanaAgregarDatos();































































































































































































































































































































































































































































































































VentVerIngresosMes vim = new VentVerIngresosMes();































































































































































































































































































































































































































































































































VentReporte vr = new VentReporte();































































































































































































































































































































































































































































































































private final static String drv = "com.mysql.jdbc.Driver";































































































































































































































































































































































































































































































































private final static String db = "jdbc:mysql://localhost:9999/control_de_gastos";































































































































































































































































































































































































































































































































private final static String UserandPass = "root";































































































































































































































































































































































































































































































































//































































































































































































































































































































































































































































































































private Connection ct;































































































































































































































































































































































































































































































































private Statement st;

public BaseDeDatos(){































































































































































































































































































































































































































































































































try{































































































































































































































































































































































































































































































































Class.forName(drv);































































































































































































































































































































































































































































































































ct = DriverManager.getConnection(db, UserandPass, UserandPass);































































































































































































































































































































































































































































































































st = ct.createStatement();































































































































































































































































































































































































































































































































//vad.setTitle("Conexión exitosa");































































































































































































































































































































































































































































































































System.out.println("Conexion exitosa");































































































































































































































































































































































































































































































































}catch(Exception e){































































































































































































































































































































































































































































































































//vad.setTitle("No se pudo concectar a la base de datos");































































































































































































































































































































































































































































































































System.out.println("No se pudo concectar a la base de datos");































































































































































































































































































































































































































































































































e.printStackTrace();































































































































































































































































































































































































































































































































}































































































































































































































































































































































































































































































































}

public void showAll(){































































































































































































































































































































































































































































































































try{































































































































































































































































































































































































































































































































ResultSet rs = st.executeQuery("SELECT * FROM datos");































































































































































































































































































































































































































































































































while(rs.next()){































































































































































































































































































































































































































































































































DefaultTableModel dtm = (DefaultTableModel) vr.tblDatos.getModel();































































































































































































































































































































































































































































































































Object[] newRow = {rs.getString(2),rs.getString(3)};































































































































































































































































































































































































































































































































dtm.addRow(newRow);































































































































































































































































































































































































































































































































System.out.println(rs.getString(1)+"|"+rs.getStrin g(2)+"|"+rs.getString(3));































































































































































































































































































































































































































































































































}































































































































































































































































































































































































































































































































}catch(Exception e){































































































































































































































































































































































































































































































































System.out.println("Error al realizar la consulta");































































































































































































































































































































































































































































































































}































































































































































































































































































































































































































































































































}

public void añadirDatos(){































































































































































































































































































































































































































































































































try{































































































































































































































































































































































































































































































































st = ct.createStatement();































































































































































































































































































































































































































































































































st.executeUpdate("insert into datos (Mes,Monto) values ('"+vad.cmbMes.getSelectedItem().toString()+"','"+ vad.txtMonto.getText()+"')");































































































































































































































































































































































































































































































































//System.out.println(""+i);































































































































































































































































































































































































































































































































}catch(Exception e){































































































































































































































































































































































































































































































































e.printStackTrace();































































































































































































































































































































































































































































































































}































































































































































































































































































































































































































































































































}

public void obtenerDatos(){































































































































































































































































































































































































































































































































try{































































































































































































































































































































































































































































































































st = ct.createStatement();































































































































































































































































































































































































































































































































st.executeQuery("select Mes,Monto from datos where Mes like "+vim.cmbMes.getSelectedItem().toString()+"and Monto >= "+0);































































































































































































































































































































































































































































































































}catch(Exception e){































































































































































































































































































































































































































































































































e.printStackTrace();































































































































































































































































































































































































































































































































}































































































































































































































































































































































































































































































































}































































































































































































































































































































































































































































































































}

and this is from VentanaAgregarDatos:

package Gui;

import Clases.BaseDeDatos;































































































































































































































































































































































































































































































































import Clases.CreacionDeDatos;































































































































































































































































































































































































































































































































import Clases.GetandSetDatos;































































































































































































































































































































































































































































































































import Clases.GuardarDatos;































































































































































































































































































































































































































































































































import Clases.Lista;































































































































































































































































































































































































































































































































import java.io.File;































































































































































































































































































































































































































































































































import java.sql.Connection;































































































































































































































































































































































































































































































































import java.sql.DriverManager;































































































































































































































































































































































































































































































































import java.sql.ResultSet;































































































































































































































































































































































































































































































































import java.sql.Statement;































































































































































































































































































































































































































































































































import java.util.ArrayList;































































































































































































































































































































































































































































































































import javax.swing.JFileChooser;































































































































































































































































































































































































































































































































import javax.swing.JOptionPane;































































































































































































































































































































































































































































































































import javax.swing.table.DefaultTableModel;

public class VentanaAgregarDatos extends javax.swing.JFrame {

/**































































































































































































































































































































































































































































































































* Creates new form VentanaAgregarDatos































































































































































































































































































































































































































































































































*/































































































































































































































































































































































































































































































































public VentanaAgregarDatos() {































































































































































































































































































































































































































































































































initComponents();































































































































































































































































































































































































































































































































}

public String nombre_archivo;































































































































































































































































































































































































































































































































public int monto;































































































































































































































































































































































































































































































































public String mes;































































































































































































































































































































































































































































































































public String contraseña;































































































































































































































































































































































































































































































































public String condicion;

@SuppressWarnings("unchecked")































































































































































































































































































































































































































































































































// <editor-fold defaultstate="collapsed" desc="Generated Code">































































































































































































































































































































































































































































































































private void initComponents() {

lblIngresarMonto = new javax.swing.JLabel();































































































































































































































































































































































































































































































































txtMonto = new javax.swing.JTextField();































































































































































































































































































































































































































































































































lblMes = new javax.swing.JLabel();































































































































































































































































































































































































































































































































cmbMes = new javax.swing.JComboBox();































































































































































































































































































































































































































































































































lblMontoIngresadoEs = new javax.swing.JLabel();































































































































































































































































































































































































































































































































lblMonto = new javax.swing.JLabel();































































































































































































































































































































































































































































































































btnAgregarDatos = new javax.swing.JButton();































































































































































































































































































































































































































































































































jLabel5 = new javax.swing.JLabel();

setDefaultCloseOperation(javax.swing.WindowConstan ts.DISPOSE_ON_CLOSE);































































































































































































































































































































































































































































































































getContentPane().setLayout(new org.netbeans.lib.awtextra.AbsoluteLayout());

lblIngresarMonto.setForeground(new java.awt.Color(151, 178, 203));































































































































































































































































































































































































































































































































lblIngresarMonto.setText("Ingresar Monto:");































































































































































































































































































































































































































































































































getContentPane().add(lblIngresarMonto, new org.netbeans.lib.awtextra.AbsoluteConstraints(10, 10, -1, -1));

txtMonto.addKeyListener(new java.awt.event.KeyAdapter() {































































































































































































































































































































































































































































































































public void keyReleased(java.awt.event.KeyEvent evt) {































































































































































































































































































































































































































































































































txtMontoKeyReleased(evt);































































































































































































































































































































































































































































































































}































































































































































































































































































































































































































































































































});































































































































































































































































































































































































































































































































getContentPane().add(txtMonto, new org.netbeans.lib.awtextra.AbsoluteConstraints(100, 10, 113, -1));

lblMes.setForeground(new java.awt.Color(151, 178, 230));































































































































































































































































































































































































































































































































lblMes.setText("Mes:");































































































































































































































































































































































































































































































































getContentPane().add(lblMes, new org.netbeans.lib.awtextra.AbsoluteConstraints(220, 10, -1, -1));

cmbMes.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Enero", "Febrero", "Marzo", "Abril", "Mayo", "Junio", "Julio", "Agosto", "Setiembre", "Octubre", "Noviembre", "Diciembre" }));































































































































































































































































































































































































































































































































getContentPane().add(cmbMes, new org.netbeans.lib.awtextra.AbsoluteConstraints(250, 10, -1, -1));

lblMontoIngresadoEs.setForeground(new java.awt.Color(151, 178, 230));































































































































































































































































































































































































































































































































lblMontoIngresadoEs.setText("El monto ingresado es:");































































































































































































































































































































































































































































































































getContentPane().add(lblMontoIngresadoEs, new org.netbeans.lib.awtextra.AbsoluteConstraints(20, 40, -1, -1));

lblMonto.setFont(new java.awt.Font("Tahoma", 0, 70)); // NOI18N































































































































































































































































































































































































































































































































lblMonto.setForeground(new java.awt.Color(151, 178, 230));































































































































































































































































































































































































































































































































lblMonto.setText("0");































































































































































































































































































































































































































































































































getContentPane().add(lblMonto, new org.netbeans.lib.awtextra.AbsoluteConstraints(160, 60, -1, 70));

btnAgregarDatos.setBackground(new java.awt.Color(204, 0, 51));































































































































































































































































































































































































































































































































btnAgregarDatos.setForeground(new java.awt.Color(255, 255, 255));































































































































































































































































































































































































































































































































btnAgregarDatos.setIcon(new javax.swing.ImageIcon(getClass().getResource("/Imagenes/btn_agregar3.jpg"))); // NOI18N































































































































































































































































































































































































































































































































btnAgregarDatos.addActionListener(new java.awt.event.ActionListener() {































































































































































































































































































































































































































































































































public void actionPerformed(java.awt.event.ActionEvent evt) {































































































































































































































































































































































































































































































































btnAgregarDatosActionPerformed(evt);































































































































































































































































































































































































































































































































}































































































































































































































































































































































































































































































































});































































































































































































































































































































































































































































































































getContentPane().add(btnAgregarDatos, new org.netbeans.lib.awtextra.AbsoluteConstraints(90, 160, 150, 40));

jLabel5.setIcon(new javax.swing.ImageIcon(getClass().getResource("/Imagenes/agregar_datos2.jpg"))); // NOI18N































































































































































































































































































































































































































































































































getContentPane().add(jLabel5, new org.netbeans.lib.awtextra.AbsoluteConstraints(0, 0, 340, -1));

pack();































































































































































































































































































































































































































































































































}// </editor-fold>

GetandSetDatos gasd = new GetandSetDatos();;































































































































































































































































































































































































































































































































CreacionDeDatos cdd = new CreacionDeDatos();































































































































































































































































































































































































































































































































Lista al = new Lista();































































































































































































































































































































































































































































































































GuardarDatos gd = new GuardarDatos();































































































































































































































































































































































































































































































































BaseDeDatos bdd = new BaseDeDatos();

private void btnAgregarDatosActionPerformed(java.awt.event.Acti onEvent evt) {































































































































































































































































































































































































































































































































//































































































































































































































































































































































































































































































































monto = Integer.parseInt(txtMonto.getText());































































































































































































































































































































































































































































































































mes = cmbMes.getSelectedItem().toString();































































































































































































































































































































































































































































































































//































































































































































































































































































































































































































































































































gasd.setMontoIngresado(monto);































































































































































































































































































































































































































































































































gasd.setMes(mes);































































































































































































































































































































































































































































































































//































































































































































































































































































































































































































































































































cdd.montoTotal(0);































































































































































































































































































































































































































































































































//































































































































































































































































































































































































































































































































bdd.añadirDatos();































































































































































































































































































































































































































































































































System.out.println(""+gasd.getMes());































































































































































































































































































































































































































































































































System.out.println(""+gasd.getMontoIngresado());































































































































































































































































































































































































































































































































}

private void txtMontoKeyReleased(java.awt.event.KeyEvent evt) {































































































































































































































































































































































































































































































































//































































































































































































































































































































































































































































































































actualizarLabel();































































































































































































































































































































































































































































































































}

public void actualizarLabel(){































































































































































































































































































































































































































































































































if(txtMonto.getText() != null){lblMonto.setText(""+txtMonto.getText());}els e{lblMonto.setText("0");}































































































































































































































































































































































































































































































































}

/**































































































































































































































































































































































































































































































































* @param args the command line arguments































































































































































































































































































































































































































































































































*/































































































































































































































































































































































































































































































































public static void main(String args[]) {































































































































































































































































































































































































































































































































/* Set the Nimbus look and feel */































































































































































































































































































































































































































































































































//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">































































































































































































































































































































































































































































































































/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.































































































































































































































































































































































































































































































































* For details see How to Set the Look and Feel (The Java™ Tutorials > Creating a GUI With JFC/Swing > Modifying the Look and Feel)































































































































































































































































































































































































































































































































*/































































































































































































































































































































































































































































































































try {































































































































































































































































































































































































































































































































for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {































































































































































































































































































































































































































































































































if ("Windows".equals(info.getName())) {































































































































































































































































































































































































































































































































javax.swing.UIManager.setLookAndFeel(info.getClass Name());































































































































































































































































































































































































































































































































break;































































































































































































































































































































































































































































































































}































































































































































































































































































































































































































































































































}































































































































































































































































































































































































































































































































} catch (ClassNotFoundException ex) {































































































































































































































































































































































































































































































































java.util.logging.Logger.getLogger(VentanaAgregarD atos.class.getName()).log(java.util.logging.Level. SEVERE, null, ex);































































































































































































































































































































































































































































































































} catch (InstantiationException ex) {































































































































































































































































































































































































































































































































java.util.logging.Logger.getLogger(VentanaAgregarD atos.class.getName()).log(java.util.logging.Level. SEVERE, null, ex);































































































































































































































































































































































































































































































































} catch (IllegalAccessException ex) {































































































































































































































































































































































































































































































































java.util.logging.Logger.getLogger(VentanaAgregarD atos.class.getName()).log(java.util.logging.Level. SEVERE, null, ex);































































































































































































































































































































































































































































































































} catch (javax.swing.UnsupportedLookAndFeelException ex) {































































































































































































































































































































































































































































































































java.util.logging.Logger.getLogger(VentanaAgregarD atos.class.getName()).log(java.util.logging.Level. SEVERE, null, ex);































































































































































































































































































































































































































































































































} catch(Exception e){































































































































































































































































































































































































































































































































e.printStackTrace();































































































































































































































































































































































































































































































































}































































































































































































































































































































































































































































































































//</editor-fold>

/* Create and display the form */































































































































































































































































































































































































































































































































java.awt.EventQueue.invokeLater(new Runnable() {































































































































































































































































































































































































































































































































public void run() {































































































































































































































































































































































































































































































































new VentanaAgregarDatos().setVisible(true);































































































































































































































































































































































































































































































































}































































































































































































































































































































































































































































































































});































































































































































































































































































































































































































































































































}

// Variables declaration - do not modify































































































































































































































































































































































































































































































































private javax.swing.JButton btnAgregarDatos;































































































































































































































































































































































































































































































































public javax.swing.JComboBox cmbMes;































































































































































































































































































































































































































































































































private javax.swing.JLabel jLabel5;































































































































































































































































































































































































































































































































private javax.swing.JLabel lblIngresarMonto;































































































































































































































































































































































































































































































































private javax.swing.JLabel lblMes;































































































































































































































































































































































































































































































































private javax.swing.JLabel lblMonto;































































































































































































































































































































































































































































































































private javax.swing.JLabel lblMontoIngresadoEs;































































































































































































































































































































































































































































































































public javax.swing.JTextField txtMonto;































































































































































































































































































































































































































































































































// End of variables declaration































































































































































































































































































































































































































































































































}