Created
January 16, 2015 12:43
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单例延迟加载
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| /** | |
| * <p>类说明:</p> | |
| * | |
| * @version 1.0 | |
| * <p>文件名：Singlen</p> | |
| * <p>创建人及时间： suntiancheng 2015/1/16</p> | |
| * <p/> | |
| * <p>修改人：</p> | |
| * <p>修改时间：</p> | |
| * <p>修改描述：</p> | |
| */ | |
| public class Singleton { | |
| /** | |
| * 类级的内部类，也就是静态的成员式内部类，该内部类的实例与外部类的实例 | |
| * 没有绑定关系，而且只有被调用到时才会装载，从而实现了延迟加载 | |
| */ | |
| private static class SingletonHolder { | |
| /** | |
| * 静态初始化器，由JVM来保证线程安全 | |
| */ | |
| private static Singleton instance = new Singleton(); | |
| } | |
| /** | |
| * 私有化构造方法 | |
| */ | |
| private Singleton() { | |
| } | |
| public static Singleton getInstance() { | |
| return SingletonHolder.instance; | |
| } | |
| } |
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