String类中toCharArray()方法的用法

 1   public class class6_3
 2 
 3          {
 4 
 5                  public static void main(String args[])
 6 
 7                  {
 8 
 9                          String s1=new String("我是中国人");
10 
11                          char[] c=s1.toCharArray();
12 
13                          System.out.println("数组c的长度为："+c.length);
14 
15                          System.out.println(c);
16 
17                          System.out.println(new String(c));
18 
19                          String s2=new String(c,1,2);
20 
21                          System.out.println(s2);
22                  }
23 
24          }