使用静态内置类实现单例模式

使用静态内置类同样可以达到线程安全的目的。

public class MyObject {
    private static class MyObjectHandler{
        private static MyObject myObject = new MyObject();
    }
    public MyObject() {
    }
    public static MyObject getInstance(){
        return MyObjectHandler.myObject;
    }
}

public class MyThread extends Thread{
    @Override
    public void run() {
        System.out.println(MyObject.getInstance().hashCode());
    }
}

public class Run {
    public static void main(String[] args) {
        MyThread myThread0 = new MyThread();
        MyThread myThread1 = new MyThread();
        MyThread myThread2 = new MyThread();
        myThread0.start();
        myThread1.start();
        myThread2.start();
    }
}

下一节:序列化与反序列化的单例模式实现

来源：oschina

链接：https://my.oschina.net/projerry/blog/3165809