5.9-4用字符串生成器给字符串str追加1~10这10个数字 

 1 package zfc;
 2 
 3 public class ZfcShcq {
 4 
 5     public static void main(String[] args) {
 6         // TODO Auto-generated method stub
 7 
 8         
 9         StringBuilder str = new StringBuilder("hello world!");
10         
11         for(int i = 1; i <= 10; i++)
12         {
13             str.append(i);
14         }
15         
16         System.out.println("字符串str追加后变为："+str);
17         
18         }
19 
20 }

 

posted @ 2015-10-10 22:34  dirgo  阅读(815)  评论(0)  编辑  收藏  举报