package examples;
import java.awt.*;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
public class Blink extends Frame implements
MouseListener, Runnable {
Thread thread;
Color[] colors =
{Color.red, Color.green, Color.blue};
int index = 0;
public void init() {
thread = new Thread(this);
thread.start();
addMouseListener(this);
}
public void run() {
repaint();
}
public static void main(String args[]) {
Blink b = new Blink();
b.setVisible(true);
b.setSize(200, 200);
b.init();
}
public void paint(Graphics g) {
while (true) {
try {
g.setColor(colors[index]);
g.fillOval(30, 30, 20, 20);
thread.sleep(500);
g.setColor(Color.white);
g.fillOval(30, 30, 20, 20);
thread.sleep(250);
} catch (InterruptedException e) {
}
}
}
public void mousePressed(MouseEvent e) {
index = (index + 1) % colors.length;
}
public void mouseClicked(MouseEvent e) {
}
public void mouseEntered(MouseEvent e) {
}
public void mouseExited(MouseEvent e) {
}
public void mouseReleased(MouseEvent e) {
}
}