Create a bouncing face in java

Problem:

Create a bouncing face.

Output:



Prompt Picture Description




Solution:

//****************BouncingFaceFrame.java******************/
import javax.swing.JFrame;

public class BouncingFaceFrame {


public static void main(String[] args) {

JFrame frame = new JFrame("Happy Face");

frame.getContentPane().add(new BouncingFacePanel());
frame.pack();
frame.setVisible(true);

}

}
//****************BouncingFacePanel.java******************.
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.ImageIcon;
import javax.swing.JPanel;
import javax.swing.Timer;

public class BouncingFacePanel extends JPanel{


private final int WIDTH = 300, HEIGHT = 300;
private final int DELAY = 20, IMAGE_SIZE = 35;

private ImageIcon icon;
private int x, y, moveX, moveY;
private Timer timer;

public BouncingFacePanel() {
timer = new Timer(DELAY, new ReboundListener());

icon = new ImageIcon("images.jpg");

x = 5; y=40;
moveX = moveY = 3;

setBackground(Color.WHITE);
setPreferredSize(new Dimension(WIDTH, HEIGHT));
timer.start();
timer.addActionListener(new ReboundListener());

}

@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
icon.paintIcon(this, g, x, y);
}

private class ReboundListener implements ActionListener {

@Override
public void actionPerformed(ActionEvent arg0) {

x += moveX;
y += moveY;

if ( x <= 0 || x >= (WIDTH-IMAGE_SIZE)) moveX *= -1;
if ( y <= 0 || y >= (WIDTH-IMAGE_SIZE)) moveY *= -1;

repaint();
}

}
}


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