java多线程之模拟死锁

来源：互联网发布：锅炉热力计算软件编辑：程序博客网时间：2024/05/22 13:36

package thread;public class TestDeadLock implements Runnable{public int flag = 1;static Object o1 = new Object(),o2 = new Object();@Overridepublic void run() {System.out.println("flag:"+flag);if(flag==1){synchronized(o1){try {Thread.sleep(100);} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}synchronized(o2){System.out.println("我是o2，被锁住了");}}}if(flag==0){synchronized(o2){try {Thread.sleep(100);} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}synchronized(o1){System.out.println("我是o1，被锁住了");}}}}public static void main(String[] args) {// TODO Auto-generated method stubTestDeadLock d1 = new TestDeadLock();TestDeadLock d2 = new TestDeadLock();Thread t1 = new Thread(d1);Thread t2 = new Thread(d2);d1.flag = 1;d2.flag = 0;t1.start();t2.start();}}

运行结果为

flag:1
flag:0

由于发生死锁，两条if语句中的打印语句永远都不会执行