java單例模式等一些程式的寫法....持續更新...

標籤：syn   cto   ret   turn   tor   style   懶漢   stat   餓漢   

一、單例模式的寫法：

public class MyFactory {    /**     * 餓漢式     */    private static MyFactory instance = new MyFactory();        private MyFactory(){            }        public static MyFactory getInstance(){        return instance;    }}

public class MyFactory {        /**     * 懶漢式(要注意處理安全執行緒問題)     */    private static MyFactory instance;        public static MyFactory getInstance(){        if(instance == null){            synchronized(MyFactory.class){                if(instance == null){                    instance = new MyFactory();                }            }        }                return instance;    }}

 

 

 

 

 

 

 

 

 

 

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java單例模式等一些程式的寫法....持續更新...