Topic: 【求助】字符串转换为数字求助

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1.【求助】字符串转换为数字求助 Copy to clipboard
Posted by: zgia
Posted on: 2005-03-15 13:08

String str1 = new String("212345672");
我想把其中的第5位（5）取出来作为整数5，该如何操作？

另外，如何得到整数12345的长度呢？
2.Re:【求助】字符串转换为数字求助 [Re: zgia] Copy to clipboard
Posted by: j0hnny
Posted on: 2005-03-15 14:20

应该用subString操作吧
3.Re:【求助】字符串转换为数字求助 [Re: zgia] Copy to clipboard
Posted by: yangnian
Posted on: 2005-03-15 14:33

class Str
{
  public static void main(String[] args)
  {
    String s = "212345672";
    String s1 = s.substring(5,6);
    int i = Integer.parseInt(s1);
    System.out.print("i="+i);
  }
}
4.Re:【求助】字符串转换为数字求助 [Re: zgia] Copy to clipboard
Posted by: xinye0123
Posted on: 2005-03-17 23:35

int i = Integer.parseInt(s1);
该句有可能抛出异常，注意一下
5.Re:【求助】字符串转换为数字求助 [Re: zgia] Copy to clipboard
Posted by: 寂寞高手
Posted on: 2005-03-22 13:50

看了楼主的作法，学到了东西。谢谢。
6.Re:【求助】字符串转换为数字求助 [Re: zgia] Copy to clipboard
Posted by: daniel84
Posted on: 2005-04-05 21:47

我怎么编译时有错误呀?
能否帮我写个完整的程序代码,谢谢!
7.Re:【求助】字符串转换为数字求助 [Re: zgia] Copy to clipboard
Posted by: wan212
Posted on: 2005-04-05 21:57

我又学到了点东西
8.Re:【求助】字符串转换为数字求助 [Re: zgia] Copy to clipboard
Posted by: jasontaoge
Posted on: 2005-04-06 10:09

class spoon {
  public static void main(String []args){
  
String str1 = new String("212345672");
char s=str1.charAt(5);

System.out.println(str1.substring(5,6));
System.out.printlnMoon;
}
}
都可以做到的！

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