Java Multithreaded Instances

public class ThreadTest {
public static void Main (string[] args) {
MyThread1 thread1 = new MyThread1 ();
Thread1.start ();
MyThread2 thread2 = new MyThread2 ();
Thread th = new Thread (THREAD2);
Th.start ();
}
}
Class MyThread1 extends Thread {
public void Run () {
while (true) {
System.out.println ("This is Thread1.");
try {
Thread.Sleep (500);
} catch (Exception e) {
}
}
}
}
Class MyThread2 implements Runnable {
public void Run () {
while (true) {
System.out.println ("This is thread2.");
try {
Thread.Sleep (500);
} catch (Exception e) {
}
}
}
}

Java Multithreaded Instances