public abstract class SomeClass implements Runnable {

public final static Object one = new Object (), two = new Object ();

public static void main (String s []) {

Thread t1 = new Thread () {

public void run () {

synchronized (one) {

synchronized (two) {

System.out.print ( "1");

}

}

}

};

Thread t2 = new Thread () {

public void run () {

synchronized (two) {

try {

Thread.sleep (1000);

} Catch (InterruptedException e) {

e.printStackTrace ();

}

synchronized (one) {

System.out.print ( "2");

}

}

}

};

t1.start ();

t2.start ();

}

}

(Java)