synchronized关键字

验证synchronized 是可重入锁？

 

public class Xttblog extends SuperXttblog {

    public static void main(String[] args) {

        Xttblog child = new Xttblog();

        child.doSomething();

    }

 

    public synchronized void doSomething() {

        System.out.println("child.doSomething()" + Thread.currentThread().getName());

        doAnotherThing(); // 调用自己类中其他的synchronized方法

    }

 

    private synchronized void doAnotherThing() {

        super.doSomething(); // 调用父类的synchronized方法

        System.out.println("child.doAnotherThing()" + Thread.currentThread().getName());

    }

}

 

class SuperXttblog {

    public synchronized void doSomething() {

        System.out.println("father.doSomething()" + Thread.currentThread().getName());

    }

}

 

执行结果：

 

child.doSomething()Thread-5492

father.doSomething()Thread-5492

child.doAnotherThing()Thread-5492

来源：CSDN

作者：光头强2013

链接：https://blog.csdn.net/u012357643/article/details/103810130