Design Function in Java

So recently I created a currency converter in Java. The GUI was completely done using the design function. I closed the design function and I am wondering if there's anyway to edit the GUI after this, because the code that the design function outputs is definitely odd. Here's the GUI code.

public HorizontalView() {

initComponents();

}

@SuppressWarnings("unchecked")

private void initComponents() {

PBactionListener ButtonListener = new PBactionListener();

jTextField1 = new javax.swing.JTextField();

jComboBox1 = new javax.swing.JComboBox();

jLabel1 = new javax.swing.JLabel();

jComboBox2 = new javax.swing.JComboBox();

jButton1 = new javax.swing.JButton();

jButton1.addActionListener(ButtonListener);

jTextField2 = new javax.swing.JTextField();

jTextField3 = new javax.swing.JTextField();

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

jTextField1.setFont(new java.awt.Font("Arial", 0, 18));

jTextField1.setHorizontalAlignment(javax.swing.JTe xtField.RIGHT);

jTextField1.setText("1");

jTextField1.addActionListener(new java.awt.event.ActionListener()

{

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

jTextField1ActionPerformed(evt);

}

});

jComboBox1.setFont(new java.awt.Font("Arial", 0, 18)); // NOI18N

for (int x = 0; x<148; x++) {jComboBox1.addItem(StringArray[x]);}

jLabel1.setFont(new java.awt.Font("Arial", 1, 18)); // NOI18N

jLabel1.setText("Converts to:");

jComboBox2.setFont(new java.awt.Font("Arial", 0, 18)); // NOI18N

for (int x = 0; x<148; x++) {jComboBox2.addItem(String1Array[x]);}

jButton1.setFont(new java.awt.Font("Arial", 1, 18)); // NOI18N

jButton1.setText("Convert");

jTextField2.setEditable(false);

jTextField2.setFont(new java.awt.Font("Arial", 1, 24)); // NOI18N

jTextField2.setText("Amount...");

jTextField3.setEditable(false);

jTextField3.setFont(new java.awt.Font("Arial", 1, 24)); // NOI18N

jTextField3.setText("$$$p00nz!");

javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());

getContentPane().setLayout(layout);

layout.setHorizontalGroup(

layout.createParallelGroup(javax.swing.GroupLayout .Alignment.LEADING)

.addGroup(layout.createSequentialGroup()

.addContainerGap()

.addGroup(layout.createParallelGroup(javax.swing.G roupLayout.Alignment.LEADING, false)

.addGroup(layout.createSequentialGroup()

.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 164, javax.swing.GroupLayout.PREFERRED_SIZE)

.addComponent(jComboBox1, 0, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))

.addGroup(layout.createSequentialGroup()

.addComponent(jLabel1)

.addGroup(layout.createParallelGroup(javax.swing.G roupLayout.Alignment.LEADING)

.addGroup(layout.createSequentialGroup()

.addComponent(jComboBox2, javax.swing.GroupLayout.PREFERRED_SIZE, 298, javax.swing.GroupLayout.PREFERRED_SIZE)

.addPreferredGap(javax.swing.LayoutStyle.Component Placement.RELATED)

.addComponent(jButton1)

.addGap(0, 0, Short.MAX_VALUE))

.addComponent(jTextField2))))

.addContainerGap(javax.swing.GroupLayout.DEFAULT_S IZE, Short.MAX_VALUE))

);

layout.setVerticalGroup(

layout.createParallelGroup(javax.swing.GroupLayout .Alignment.LEADING)

.addGroup(layout.createSequentialGroup()

.addContainerGap()

.addGroup(layout.createParallelGroup(javax.swing.G roupLayout.Alignment.BASELINE)

.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)

.addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))

.addGroup(layout.createParallelGroup(javax.swing.G roupLayout.Alignment.BASELINE)

.addComponent(jComboBox2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)

.addComponent(jLabel1)

.addComponent(jButton1))

.addComponent(jTextField2, javax.swing.GroupLayout.DEFAULT_SIZE, 89, Short.MAX_VALUE)

.addContainerGap())

);

pack();

}

private void jTextField1ActionPerformed(java.awt.event.ActionEv ent evt) {

}

public static void main(String args[]) {

try {

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

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

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

break;

}

}

} catch (ClassNotFoundException ex) {

java.util.logging.Logger.getLogger(HorizontalView. class.getName()).log(java.util.logging.Level.SEVER E, null, ex);

} catch (InstantiationException ex) {

java.util.logging.Logger.getLogger(HorizontalView. class.getName()).log(java.util.logging.Level.SEVER E, null, ex);

} catch (IllegalAccessException ex) {

java.util.logging.Logger.getLogger(HorizontalView. class.getName()).log(java.util.logging.Level.SEVER E, null, ex);

} catch (javax.swing.UnsupportedLookAndFeelException ex) {

java.util.logging.Logger.getLogger(HorizontalView. class.getName()).log(java.util.logging.Level.SEVER E, null, ex);

}

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

public void run() {

new HorizontalView().setVisible(true);

}

});

}

private javax.swing.JButton jButton1;

private javax.swing.JComboBox jComboBox1;

private javax.swing.JComboBox jComboBox2;

private javax.swing.JLabel jLabel1;

private javax.swing.JLabel jLabel2;

private javax.swing.JTextField jTextField1;

private javax.swing.JTextField jTextField2;

private javax.swing.JTextField jTextField3;