多线程单例模式之立即加载(饿汉模式)

Posted 2020-10-14 我想回家

package com.wz.thread.immediately;
/**
 * 立即加载/饿汉模式 单例设计模式
 * @author Administrator
 *
 */
public class MyObject {
    
    private static MyObject myObject = new MyObject();
    private MyObject() {}
    public static MyObject getInstance() {
        return myObject;
    }

}

 

package com.wz.thread.immediately;

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

}

 

package com.wz.thread.immediately;
/**
 * 输出的hascode值相同,说明是同一个对象
 * @author Administrator
 *
 */
public class Run {

    public static void main(String[] args) {
        MyThread t1 = new MyThread();
        MyThread t2 = new MyThread();
        MyThread t3 = new MyThread();
        t1.start();
        t2.start();
        t3.start();
    }
}