单例模式之JAVA实现
class Singleton { private static Singleton instance = null; private Singleton() { System.out.println("Init the Singleton instance!"); } public static Singleton getInstance() { if (null == instance) instance = new Singleton(); return instance; } } public class SingletonPattern { /** * @param args */ public static void main(String[] args) { Singleton instanceA = Singleton.getInstance(); Singleton instanceB = Singleton.getInstance(); if (instanceA == instanceB) { System.out.println("They are the same instance!"); } } }
郑重声明:本站内容如果来自互联网及其他传播媒体,其版权均属原媒体及文章作者所有。转载目的在于传递更多信息及用于网络分享,并不代表本站赞同其观点和对其真实性负责,也不构成任何其他建议。