import javax.microedition.lcdui.Canvas;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Graphics;

public class NewClass extends Canvas implements CommandListener, Runnable {

private Command c1 = new Command("Add New", Command.OK, 1);
private Command c2 = new Command("Destroy", Command.BACK, 1);
private Command c3 = new Command("Exit", Command.EXIT, 1); 
private boolean z;
private int num = 0;
    
protected void paint(Graphics g) {

this.addCommand(c1);
this.addCommand(c2);
this.addCommand(c3);
this.setFullScreenMode(false);
this.setCommandListener(this);
g.setColor(0);
g.fillRect(0, 0, this.getWidth(), this.getHeight());
g.setColor(0xff00);
g.drawString(""+Thread.activeCount(), 5, 5, 0);
g.setColor(0xff0000);
g.drawString("I'm alive "+num+" :)", 5, 55, 0);
this.repaint();
    
}

public void commandAction(Command c, Displayable d) {

if(c==c1) { z = true; 
            Thread t = new Thread(this);
            t.start(); }    
if(c==c2) { z = false; }  
if(c==c3) { JavaME.midlet.notifyDestroyed(); }

}

public void run() {
 
while (z) { num++;
            try { Thread.sleep(1); }
            catch (java.lang.InterruptedException zxz) {};
          }
    
}

}