Java单例模式之initialization on demand holder
2017-05-21 20:51
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Stage类的getInstance()方法采用“initialization on demand holder”的技术来创建线程安全的单例类。
public class Stage {//或得唯一的展示舞台 private Stage() { } private static class StageSingletonHolder { static Stage instance = new Stage(); //延时加载实例 } public static Stage getInstance() { return StageSingletonHolder.instance; //返回实例 } }
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