JAVA基础----java死锁的一个例子 博客分类： JAVA基础 java thread deadlock 死锁

java的一个死锁的例子

package com.out.test;

public class Test6 implements Runnable{  
    public static Object o1 = new Object();  
    public static Object o2 = new Object();  
    public static int i = 1;  
    public int flag=1;  
      
    public void run() {  
        System.out.println(i++ + "线程启动。。。。");  
        if (flag == 1) {  
            synchronized(o1) {  
                try {  
                    Thread.sleep(3000);  
                } catch (InterruptedException e) {  
                    e.printStackTrace();  
                }
                
                synchronized (o2) {  
                    System.out.println(i + "线程结束");  
                }
            }  
        }    
          
        if (flag == 0) {  
            synchronized(o2) {  
                try {  
                    Thread.sleep(1000);  
                } catch (InterruptedException e) {  
                    e.printStackTrace();  
                }
                
                synchronized (o1) {  
                    System.out.println(i + "线程结束");  
                } 
            }  
        }  
    }  
      
    public static void main(String[] args) {  
        Test6 lock1 = new Test6();  
        Test6 lock2 = new Test6();  
        lock1.flag = 1;
        lock2.flag = 0;
        Thread thread1 = new Thread(lock1);  
        Thread thread2 = new Thread(lock2);  
          
        thread1.start();  
        thread2.start();  
    }  
}