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Singleton DCL (double check the lock) full han mode and the hungry

2022-08-09 06:33:00 【The strongest disciple in history】 

public class Test29 {public static void main(String[] args) {SingleObject singleObject = SingleObject.getSingleObject();}}//Singleton hungry modeclass SingleObject2{private static volatile SingleObject2 singleObject = new SingleObject2();private SingleObject2 (){}public static SingleObject2 getSingleObject(){return singleObject;}}//Singleton full Chinese modeclass SingleObject{private static volatile SingleObject singleObject;private SingleObject (){}//double Check lockpublic static SingleObject getSingleObject(){if(singleObject == null){synchronized (SingleObject.class){if(singleObject == null){singleObject = new SingleObject();}}}return singleObject;}}

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