两个线程，一个线程持有另一个线程运行时的锁，就会死锁
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public class SynchronizedLock{ public
static void main(String[] args) throws
InterruptedException { SynchronizedLockDemo sld = new
SynchronizedLockDemo(); Thread thread0 = new
Thread(sld); Thread thread1 = new
Thread(sld); thread0.start(); Thread.sleep(1); sld.flag = true; thread1.start(); } }enum Lock{ LOCKA,LOCKB;}class
SynchronizedLockDemo implements
Runnable{ //布尔变量的默认值是false boolean
flag; public
void synLock(){ if(flag){ synchronized(Lock.LOCKA){ System.out.println("从a到b外层"); synchronized(Lock.LOCKB){ System.out.println("从a到b内层"); } } }else{ synchronized(Lock.LOCKB){ System.out.println("从b到a外层"); synchronized(Lock.LOCKA){ System.out.println("从b到a内层"); } } } } @Override public
void run() { synLock(); }} |
原文：http://www.cnblogs.com/lxricecream/p/3595626.html