Java concurrency deadlock instance, java dead instance

Java concurrency deadlock instance, java dead instance

 1 package com.thread.test.thread; 2  3 /** 4  * Created by windwant on 2016/6/3. 5  */ 6 public class MyTestDeadLock { 7     public void run() { 8         MyThread mt = new MyThread(); 9         new Thread(mt, "zhangsan").start();10         new Thread(mt, "lisi").start();11     }12 13     class MyThread implements Runnable {14         private Object o1 = new Object();15         private Object o2 = new Object();16         private boolean flag = true;17 18 19         public void run() {20             if (flag) {21                 flag = false;22                 synchronized (o1) {23                     System.out.println(Thread.currentThread().getName() + " have o1");24                     try {25                         Thread.sleep(100);26                     } catch (InterruptedException e) {27                         e.printStackTrace();28                     }29                     synchronized (o2) {30                         System.out.println(Thread.currentThread().getName() + " have o2");31                     }32                 }33             } else {34                 flag = true;35                 synchronized (o2) {36                     System.out.println(Thread.currentThread().getName() + " have o2");37                     try {38                         Thread.sleep(100);39                     } catch (InterruptedException e) {40                         e.printStackTrace();41                     }42                     synchronized (o1) {43                         System.out.println(Thread.currentThread().getName() + " have o1");44                     }45                 }46             }47         }48     }49 50     public static void main(String[] args) {51         new MyTestDeadLock().run();52     }53 }

Project address: https://github.com/windwant/threadtest