单态设计模式

 

<!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>--> 1 public class SingleObj
 2 {
 3     private static SingleObj OnlyOne = null;
 4     private SingleObj（）
 5     {}
 6     public static SingleObj getInstance()
 7     {
 8         
 9         if(OnlyOne = null) OnlyOne = new SingleObj();
10         return OnlyOne;
11         
12     }
13 }