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Copy pathDeadLock.java
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37 lines (32 loc) · 977 Bytes
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package ThreadTest2;
/*同步的弊端
1 效率低
2 如果出现同步嵌套，会出现死锁问题
死锁问题：是指两个或两个以上的的线程在执行的过程中，因争夺资源而产生的一种互相等待的现象
* */
public class DeadLock extends Thread {
private boolean flag;
public DeadLock() {
}
public DeadLock(boolean flag) {
this.flag = flag;
}
@Override
public void run() {
if (flag) {
synchronized (LockObject.object1) {
System.out.println("一根筷子");
synchronized (LockObject.object2) {
System.out.println("一把刀");
}
}
} else {
synchronized (LockObject.object2) {
System.out.println("一根chazi");
synchronized (LockObject.object1) {
System.out.println("一根筷子");
}
}
}
}
}