SingletonClass.java

/**
 * 单例模式--静态内部类
 * Author: SantosZhou.
 * Date: 2017/2/23 09:10.
 * Package: com.zhourl.hellossh.cases.singleton.
 */
public class SingletonClass {
    /**
     * 私有化构造器
     */
    private SingletonClass() {

    }

    /**
     * 静态内部类--第一被引用是加载
     */
    private static class SingletonClassInstance {
        private static final SingletonClass instance = new SingletonClass();
    }

    /**
     * 获取单例
     * @return Singleton对象
     */
    public SingletonClass getInstance() {
        return SingletonClassInstance.instance;
    }

}