class MySingleton{
    
    
    // 懒汉式
    private final static MySingleton mySingleton = null;
    // 饿汉式
    private final static MySingleton mySingletonLasy = new MySingleton();
    
    private MySingleton(){
    
    }
    
    public static MySingleton getInstance(){
    
    
        return new MySingleton();
    }
    
    public static MySingleton getInstanceLasy(){
    
    
        return mySingletonLasy;
    }
}