package www.bittech.java; class Singleton{ private static Singleton singleton; private Singleton(){} public static Singleton getInstance(){ if(singleton == null){ singleton = new Singleton(); } return singleton; } } public class Test { public static void main(String[] args) { //通过Singleton类的外部就可以调用方法取得一个对象 Singleton singleton1 = Singleton.getInstance(); Singleton singleton2 = Singleton.getInstance(); System.out.println(singleton1==singleton2); } }
懒汉式单例
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转载自blog.csdn.net/family_love_1998/article/details/88937238
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