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from http://www.dotblogs.com.tw/pin0513/archive/2010/03/08/13931.aspx
1: public class Singleton{
2: //透用一個靜態變數記錄實體
3: private static Singleton uniqueInstance;
4: //建構式的啦
5: private Singleton(){}
6: public static Singleton getInstance(){
7: if (uniqueInstance == null)
8: uniqueInstance = new Singleton();
9: return uniqueInstance;
10: }
11: }
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