JButton positioning:

Java Code:

import java.awt.GridLayout;
import javax.swing.*;

public class Screen
{
        JButton start;
        JButton reset;
        JButton box[][] = new JButton[20][20];
        
        Screen()
        {
                JFrame j = new JFrame();
                j.setSize(700,500);
                j.setLayout(new GridLayout(20,20));
                j.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                
                //create buttons
                for(int row=0;row<20;row++)
                {
                        for(int col=0;col<20;col++)
                        {
                                box[row][col] = new JButton();
                                j.add(box[row][col]);
                        }
                }
                
                //create start button
                start = new JButton("Start");
                j.add(start);
                start.setLocation(0, 0);
                
                //create reset button
                reset = new JButton("Reset");
                j.add(reset);
                reset.setLocation(2, 0);
                
                j.setVisible(true);
                
        }
        
        public static void main(String[] args)
        {
                new Screen();
        }

}

I would like the borons to be placed on the bottom. I will be adding a scroll feature to it because this is going to be a program that shows the results of different path finding algorithms. Before I can even start that part I need to learn how to make the interface..