public class SimpleThread extends Thread {

private int countdown=5;
private int threadnumber;
private static int threadcount=0;

public SimpleThread(){
	threadnumber=++threadcount;
	System.out.println("marking"+threadnumber);
}
public void run(){
	while(true){
		System.out.println("thread"+threadnumber+"("+countdown+")");
	if(--countdown==0)return;
	}
}
public static void main(String[] args){
	for(int i=0;i<5;i++)
		new SimpleThread().start();
	System.out.println("All threads started");
}

}