摘要：
Here is the code: 1 /* 2 Some class,such as a config file,need to be only one.So we need to control the instance. 3 1,private the constructor and crea... 阅读全文
摘要：
Here is the code: 1 /* 2 Instance invocation in the memory: 3 4 */ 5 package kju.obj; 6 7 import static kju.print.Printer.*; 8 public class NonStati... 阅读全文