(in Java please) How can i make it Every time the button is pressed the ball is

Question

(in Java please)

How can i make it Every time the button is pressed the ball is animated, up and down, bouncing like a ball.

The goal of this lab is to use a Thread and get rid of the button. Animate it automatically with a Thread

This is the codes that i have to add on them.

package threadlabexample;

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JPanel;

public class CanvasPanel extends JPanel implements Runnable{
int x, y;
int offset = 25;
CanvasPanel()
{
  
// Button b = new Button("move");
// b.addActionListener(this);
// add(b);
x = 50;
y = 50;
}
  
public void paintComponent(Graphics g)
{
super.paintComponent(g);
Graphics2D g2 = (Graphics2D)g;
g2.fillOval(x, y, 50, 50);
}

@Override
public void run()
{
if(y>420) //logic
offset = -25;
else if(y < 10)
offset = 25;
y += offset;
repaint();
}

  
}

------------------------------------------------------------------

package threadlabexample;
  

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

   public class ThreadLabExample extends JFrame {
   CanvasPanel cp;
  
   ThreadLabExample()
   {
   super("Thread Example");
   setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   setSize(500, 500);
   cp = new CanvasPanel();
   getContentPane().add(cp, BorderLayout.CENTER);
   setVisible(true);
  
  
   }
   public void animate()
   {
  
   //Thread t = new Thread(cp);
   //t.start();
   }
   /**
   * @param args the command line arguments
   */
   public static void main(String[] args) {
   new ThreadLabExample();
   // TODO code application logic here
   }
  
  
   }

Explanation / Answer

I have tried as per my knowledge.Please have a look.

import java.awt.Container;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class BounceThread {

public static void main(String[] args) {
JFrame frame = new BounceThreadFrame();
frame.show();
}
}

class BounceThreadFrame
extends JFrame {

public BounceThreadFrame() {
setSize(300, 200);
setTitle("Bounce");

addWindowListener(new WindowAdapter() {

public void windowClosing(WindowEvent e) {
System.exit(0);
}
});

Container contentPane = getContentPane();
canvas = new JPanel();
contentPane.add(canvas, "Center");
JPanel p = new JPanel();
addButton(p, "Start", new ActionListener() {

public void actionPerformed(ActionEvent evt) {
Ball b = new Ball(canvas);
b.start();
}
});

addButton(p, "Close", new ActionListener() {

public void actionPerformed(ActionEvent evt) {
canvas.setVisible(false);
System.exit(0);
}
});
contentPane.add(p, "South");
}

public void addButton(Container c, String title, ActionListener a) {
JButton b = new JButton(title);
c.add(b);
b.addActionListener(a);
}

private JPanel canvas;
}

class Ball
extends Thread {

public Ball(JPanel b) {
box = b;
}

public void draw() {
Graphics g = box.getGraphics();
g.fillOval(x, y, XSIZE, YSIZE);
g.dispose();
}

public void move() {
if (!box.isVisible())
return;
Graphics g = box.getGraphics();
g.setXORMode(box.getBackground());
g.fillOval(x, y, XSIZE, YSIZE);
x += dx;
y += dy;
Dimension d = box.getSize();
if (x < 0) {
x = 0;
dx = -dx;
}
if (x + XSIZE >= d.width) {
x = d.width - XSIZE;
dx = -dx;
}
if (y < 0) {
y = 0;
dy = -dy;
}
if (y + YSIZE >= d.height) {
y = d.height - YSIZE;
dy = -dy;
}
g.fillOval(x, y, XSIZE, YSIZE);
g.dispose();
}

public void run() {
try {
draw();
for (int i = 1; i <= 1000; i++) {
move();
sleep(5);
}
}
catch (InterruptedException e) {
}
}

private JPanel box;

private static final int XSIZE = 10;

private static final int YSIZE = 10;

private int x = 0;

private int y = 0;

private int dx = 2;

private int dy = 2;
}

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