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DeadLock Program

Program On DeadLock:

    import java.util.*;
    class A{
       public synchronized void d1(B b)
         {
            System.out.println("Thread start executing d1() method");
            try{
              Thread.sleep(5000);
              }catch(Exception e){}
           System.out.println("Thread try to invoke B's last()");
            b.last();
       }
     public synchronized void last()
     {
         System.out.println("last() method of A's class");
     }
   }
    class B{
       public synchronized void d2(A a)
         {
            System.out.println("Thread start executing d2() method");
            try{
              Thread.sleep(5000);
              }catch(Exception e){}
           System.out.println("Thread try to invoke A's last()");
            a.last();
       }
     public synchronized void last()
     {
         System.out.println("last() method of B's class");
     }
   }
 class DeadLock extends Thread{
   A a=new A();
   B b=new B();
 public void m1(){
  this.start();//internally call run() and allocate separate call stack, 
  a.d1(b);//execute By main Thread
  }
public void run()
{
   b.d2(a);
}
   public static void main(String[] args)
     {
        DeadLock l=new DeadLock();
        l.m1();
     }
} 

output:














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