最简单的java死锁例子

public  class A {
	public synchronized void a(B b){
		System.out.println("Enter A, a function");
		try {
			Thread.sleep(100);
		} catch (InterruptedException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		b.print();
	}

	public synchronized void print(){
		System.out.println("print A");
	}
}

public class B {
	public synchronized void b(A a){
		System.out.println("enter B, b function");
		try {
			Thread.sleep(100);
		} catch (InterruptedException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		a.print();
	}

	public synchronized void print(){
		System.out.println("Print B");
	}
}

public class Test implements Runnable{	A a = new A();	B b = new B();		public void run(){		b.b(a);	}	public void init(){		a.a(b);	}	public static void main(String[] args) {		// TODO Auto-generated method stub		Test t = new Test();		new Thread(t).start();//		try {//			Thread.sleep(1000);//		} catch (InterruptedException e) {//			// TODO Auto-generated catch block//			e.printStackTrace();//		}		t.init();			}}

如果在主线程main中加上Thread.sleep(1000)，将达到死锁的效果。