/*
* 演示死锁：（由毕向东视频所得）
* 一种解释：Thread—0拿到lock1锁，Thread—1拿到lock2锁，Thread—0想要lock2锁而Thread-1想要lock1锁，
* 两个线程都无法继续执行下去，产生死锁。
* 执行结果：Thread-0 if.....lock1
*　　　　　 Thread-1 else....lock2
*/
package com.dld;

public class DeadLockDemo {

public static void main(String[] args) {
// TODO 自动生成的方法存根

Test a=new Test(true);
Test b=new Test(false);
Thread t1=new Thread(a);
Thread t2=new Thread(b);
t1.start();
t2.start();
}

}
class MyLock
{
public static final Object lock1=new Object();
public static final Object lock2=new Object();

}
class Test implements Runnable
{
private boolean flag;
public Test(boolean flag)
{
this.flag=flag;
}
public void run()
{
if(flag)
{
while(true)
synchronized (MyLock.lock1)
{
System.out.println(Thread.currentThread().getName()+" if.....lock1");
synchronized (MyLock.lock2)
{
System.out.println(Thread.currentThread().getName()+" if....lock2");
}
}
}else{
while(true)
synchronized (MyLock.lock2)
{
System.out.println(Thread.currentThread().getName()+" else....lock2");

synchronized (MyLock.lock1)
{
System.out.println(Thread.currentThread().getName()+" else.....lock1");
}
}
}
}
}

java的一个简单死锁的例子