Java开发网 - 帮忙解决一下问题，看代码错在那里！(NumberFormatException)

Topic: 帮忙解决一下问题，看代码错在那里！(NumberFormatException)

1.帮忙解决一下问题，看代码错在那里！(NumberFormatException)

Posted by: 海之南山之最
Posted on: 2005-10-22 14:19

请尽量使用准确的文字描述作为标题

It's more desirable to cut-n-paste from the Command Prompt window than to use a Printscreen image.

Original subject : 帮忙解决一下问题，看代码错在那里！！

代码！！

import java.io.*;
public class Zongfen
{
  public static void main(String args[])
  {
    String s="";
    int i,j,data,sum;
    System.out.println("pelase in put number:");
    for(i=1;i<=10;i++)
    {sum=0;
      for(j=1;j<=5;j++){

      try
      {sum=0;
        BufferedReader in=new BufferedReader(new InputStreamReader(System.in));
    s=in.readLine();
    }
  catch (IOException e){}
  data=Integer.parseInt(s);
  sum=sum+data;
      }
      System.out.println("zongfen is :" + sum);
    }

  }
  }

2.Re:帮忙解决一下问题，看代码错在那里！！ [Re: 海之南山之最]	Copy to clipboard
Posted by: ranchgirl Posted on: 2005-10-22 14:48 For input string "80 89 80 84 87"????????? Of couse, "80 89 80 84 87" is not parsable as a number!!!!! You can either enter one number at a time, or use StringTokenizer in your code.

3.Re:帮忙解决一下问题，看代码错在那里！！ [Re: 海之南山之最]	Copy to clipboard
Posted by: q_yuan Posted on: 2005-10-22 15:46 Is this method of inputing number right? It is right in passcal,but not in JAVA! So you should change your method!

4.Re:帮忙解决一下问题，看代码错在那里！！ [Re: 海之南山之最]

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Posted by: hust313
Posted on: 2005-10-22 19:00

import java.io.*;
public class ZongFen{
  public static void main(String args[]){
    int i,j,data=0,sum=0;
    System.out.println("pelase in put number:");
    for(i=1;i<=10;i++){
      for(j=1;j<=5;j++){
        try{
          BufferedReader in=new BufferedReader(new InputStreamReader(System.in));
          data=in.read()-48;
        }
        catch (IOException e){
        }
        sum+=data;
      }
      System.out.println("zongfen is :" + sum);
    }
  }
}

5.Re:帮忙解决一下问题，看代码错在那里！！ [Re: 海之南山之最]

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Posted by: 海之南山之最
Posted on: 2005-10-22 22:21

上面的师兄好象不能运行哦？？
看运行后的反应！！错误啊

Please don't use BMP image -- the 680kB image has been removed.
In fact, you should just cut-n-paste the content from the Command Prompt window:

c:\myjava> java ZongFen
Exception in the thread "main" java.lang.NoClassDefFoundDefError: ZongFen (wrong name: Zongfen)
...

Be careful with the name of the class and the java file: ZongFen vs Zongfen

6.Re:帮忙解决一下问题，看代码错在那里！！ [Re: 海之南山之最]	Copy to clipboard
Posted by: leiqlion Posted on: 2005-10-30 18:48 至少要加一个(int)

7.Re:帮忙解决一下问题，看代码错在那里！(NumberFormatException) [Re: 海之南山之最]	Copy to clipboard
Posted by: xfhu Posted on: 2005-11-02 11:58 应该每输入一个整数之后要敲一个回车的. pelase in put number: 1 2 3 4 5 zongfen is :15 还有我去掉了:sum=0;