package com.swift;
public class DeadLock implements Runnable {
private boolean flag;
DeadLock(boolean flag) {
this.flag = flag;
}
public void run() {
while (true) {
if (flag) {
synchronized ("suo1") {
System.out.println(Thread.currentThread().getName()+"if....locka");
synchronized ("suo2") {
System.out.println(Thread.currentThread().getName()+"if.....lockb");
}
}
} else {
synchronized ("suo2") {
System.out.println(Thread.currentThread().getName()+"else.....lockb");
synchronized ("suo1") {
System.out.println(Thread.currentThread().getName()+"else....locka");
}
}
}
}
}
public static void main(String[] args) {
/*
* 写一个死锁
*/
//只有互相都等待对方放弃资源才会产生死锁
new Thread(new DeadLock(true),"线程1").start();
new Thread(new DeadLock(false),"线程2").start();
}
}
同步代码块的锁也可以用对象,如LockA.locka
locka对象为静态 公共