案例:
package com.javaSe.DeadLock; /* 死锁代码要会写。 一般面试官会要求你会写。 只有会写的,才会在以后的开发中注意这个事情。 因为死锁很难调试。 */ public class DeadfLock { public static void main(String[] args) { Object o1 = new Object(); Object o2 = new Object(); // t1和t2两个线程共享o1,o2 Thread t1 = new MyThread1(o1,o2); Thread t2 = new MyThread2(o1,o2); t1.start(); t2.start(); } } class MyThread1 extends Thread{ Object o1; Object o2; public MyThread1(Object o1,Object o2){ this.o1 = o1; this.o2 = o2; } public void run(){ synchronized(o1){ try { Thread.sleep(1000); } catch (InterruptedException e) { e.printStackTrace(); } synchronized (o2){ } } } } class MyThread2 extends Thread{ Object o1; Object o2; public MyThread2(Object o1,Object o2){ this.o1 = o1; this.o2 = o2; } public void run(){ synchronized(o2){ try { Thread.sleep(1000); } catch (InterruptedException e) { e.printStackTrace(); } synchronized (o1){ } } } }