死锁演示

最新推荐文章于 2022-04-07 17:25:58 发布

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package com.demo;

/*
 * 死锁演示
 */
public class DeadLockDemo {
	public static void main(String[] args) {
		Test a = new Test(true);
		Test b = new Test(false);

		Thread t1 = new Thread(a);
		Thread t2 = new Thread(b);

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

class Test implements Runnable {
	private boolean flag;

	public Test(boolean flag) {
		this.flag = flag;
	}

	public void run() {
		if (flag) {
			synchronized (MyLock.locka) {
				System.out.println(Thread.currentThread().getName()
						+ ":if -----locka----");
				synchronized (MyLock.lockb) {
					System.out.println(Thread.currentThread().getName()
							+ ":if -----lockb----");
				}
			}
		} else {
			synchronized (MyLock.lockb) {
				System.out.println(Thread.currentThread().getName()
						+ ":else -----lockb----");

				synchronized (MyLock.locka) {
					System.out.println(Thread.currentThread().getName()
							+ ":else -----locka----");
				}
			}
		}
	}
}

class MyLock {
	public static final Object locka = new Object();
	public static final Object lockb = new Object();
}