Need a help For making a letter bounce

[andystwn]

im trying to make a letter bounce off of the edges of the frame , but im stuck . can anyone help me to fix it ?

import javax.swing.*;

import java.awt.*;
public class MainProgram extends JFrame{
	
		
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		MainProgram frm = new MainProgram();
		frm.setTitle("Moving a letter");
		frm.setSize(600, 600);
		frm.setLocationRelativeTo(null);
		frm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frm.add(new MovingObject());
		frm.setVisible(true);
	}

}
class MovingObject extends JComponent {
	private int X = 300;
    private int Y = 300;
    private char letter = 'O';
    public MovingObject() {
        Thread animationThread = new Thread(new Runnable() {
            public void run() {
                while (true) {
   
                    repaint();
                    try {Thread.sleep(10);} catch (Exception ex) {}
                }
            }
        });

        animationThread.start();
    }
    public void paintComponent(Graphics g) {
       
        int w = getWidth();
        int h = getHeight();

        
         int objectSpeed = 2;
        
        int x = X + objectSpeed  ;
        
        int y = Y;
        
      
     
        super.paintComponent(g);
		Font baru = new Font ("ARIAL",Font.PLAIN,30);
		g.setFont(baru);
		g.drawString(String.valueOf(letter), x, y);
       
     if ( x > h)
        {
        	  x = X - objectSpeed;
        	
        }
     Y = y;
        X = x ;
        
    }
}

Any help would be appreciated.thanks.

[Norm]

but im stuck . can anyone help me to fix it

Can you explain what the code does now and what you want to change?

[andystwn]

I wanna make the alphabets bounce

[Norm]

Ok, to do that requires that the x and y values of the shapes be changed every unit of time.
When the shape's location touches a side of the view area, the values of x and y need to change to go in a new direction.

In the code what values are in the variables: x and X? And y and Y?
The names of variables should tell you what they contain.