dead_lock

````
package thread;

class FirstResource implements Runnable {

    @Override
    public void run() {
        synchronized (String.class){
            System.out.println(Thread.currentThread().getName() + " Thread entered in first resource");
            try {
                Thread.sleep(100);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            System.out.println(Thread.currentThread().getName() + " is waiting for object class ");
            synchronized (Object.class){

            }
            System.out.println("Thread executed successfully "+ Thread.currentThread().getName());
        }

    }
}

class SecondResource implements Runnable{
    public void run(){
        synchronized (Object.class){
            System.out.println(Thread.currentThread().getName() + " Thread entered in second resource");
            try {
                Thread.sleep(100);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            System.out.println(Thread.currentThread().getName()+ " is waiting for String class ");
            synchronized (String.class){
                System.out.println("Thread executed sucessfully"+ Thread.currentThread().getName());
            }
        }
    }
}


public class DeadLock {
    public static void main(String[] args){
        Thread t1 = new Thread(new FirstResource(), "Thread 1");
        Thread t2 = new Thread(new SecondResource(), "Thread 2");

        t1.start();
        t2.start();
    }
}

````