Java Example Program / Sample Source Code
import java.applet.Applet;
import java.awt.Button;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class NumberCountingApplet extends Applet implements ActionListener,
Runnable {
int counter;
Thread thread;
public void init() {
Button button = new Button("Start Number Count");
button.addActionListener(this);
add(button);
}
public void actionPerformed(ActionEvent ae) {
counter = 0;
thread = new Thread(this);
thread.start();
}
public void run() {
try {
while (true) {
repaint();
Thread.sleep(1500);
++counter;
}
} catch (InterruptedException e) {
e.printStackTrace();
}
}
public void paint(Graphics g) {
g.setFont(new Font("verdana", Font.BOLD, 30));
Dimension d = getSize();
int x = d.width / 2;
int y = d.height / 2;
g.drawString("" + counter, x, y);
}
} |
|
|
