ThreadDeadlock.java

package tomkous.algos;

public class ThreadDeadlock {
	
	 public static Object Lock1 = new Object();
	  public static Object Lock2 = new Object();

	  public static void main(String args[]) {
	      ThreadDemo1 T1 = new ThreadDemo1();
	      ThreadDemo2 T2 = new ThreadDemo2();
	      T1.start();
	      T2.start();
	   }
	   
	   private static class ThreadDemo1 extends Thread {
	      public void run() {
	         synchronized (Lock1) {
	            System.out.println("Thread 1: Holding lock 1...");
	            
	            try { Thread.sleep(10); }
	            catch (InterruptedException e) {}
	            System.out.println("Thread 1: Waiting for lock 2...");
	            
	            synchronized (Lock2) {
	               System.out.println("Thread 1: Holding lock 1 & 2...");
	            }
	         }
	      }
	   }
	   private static class ThreadDemo2 extends Thread {
	      public void run() {
	         synchronized (Lock2) {
	            System.out.println("Thread 2: Holding lock 2...");
	            
	            try { Thread.sleep(10); }
	            catch (InterruptedException e) {}
	            System.out.println("Thread 2: Waiting for lock 1...");
	            
	            synchronized (Lock1) {
	               System.out.println("Thread 2: Holding lock 1 & 2...");
	            }
	         }
	      }
	   } 
	}