线程死锁例子

public class TestDeadLock implements Runnable{
	public int flag = 1;
	static Object obj1 = new Object(),obj2 = new Object();

	public void run() {
		System.out.println("flag= "+flag);

		if(flag==1) {
			synchronized (obj1) {
				try {
					Thread.sleep(500);
				} catch (InterruptedException e) {
					e.printStackTrace();
				}
				synchronized (obj2) {
					System.out.println("1");
				}
			}
		}

		if(flag==0) {
			synchronized (obj2) {
				try {
					Thread.sleep(500);
				} catch (InterruptedException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
				synchronized (obj1) {
					System.out.println("0");
				}
			}
		}
	}
	public static void main(String[] args) {
		TestDeadLock td1 = new TestDeadLock();
		TestDeadLock td2 = new TestDeadLock();
		td1.flag = 1;
		td2.flag = 0;
		Thread t1 = new Thread(td1);
		Thread t2 = new Thread(td2);

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