Write a program to create deadlock between two threads

Write a program to create deadlock between two threads.

Code:

? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 public class MyDeadlock {     String str1 = "Java";     String str2 = "UNIX";           Thread trd1 = new Thread("My Thread 1"){         public void run(){             while(true){                 synchronized(str1){                     synchronized(str2){                         System.out.println(str1 + str2);                     }                 }             }         }     };           Thread trd2 = new Thread("My Thread 2"){         public void run(){             while(true){                 synchronized(str2){                     synchronized(str1){                         System.out.println(str2 + str1);                     }                 }             }         }     };           public static void main(String a[]){         MyDeadlock mdl = new MyDeadlock();         mdl.trd1.start();         mdl.trd2.start();     } }