Java开发网 - 关于异常问题！ArrayIndexOutOfBoundsException

Topic: 关于异常问题！ArrayIndexOutOfBoundsException

1.关于异常问题！ArrayIndexOutOfBoundsException

Posted by: SophiaBaby
Posted on: 2005-09-05 23:44

The 800 KB attachment is removed.
Please don't use BMP file as attachment, GIF or JPEG are much smaller!
In fact, copy-n-paste from the Command Prompt window should be much better!

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 0
at ReadFiel.main(ReadFiel.java:5)

请尽量使用准确的文字描述作为标题
Original subject : 关于异常问题！

请大家看一下这个程序：
import java.io.*;

public class ReadFiel {
  public static void main(String[] args){
    File file=new File(args[0]);

    try{
      BufferedReader in=new BufferedReader(new FileReader(file));
      String s;

      while((s=in.readLine())!=null){
        System.out.println(s);
      }
      in.close();
    }catch(FileNotFoundException e1){
      System.err.println("File is not found:"+file);
    }catch(IOException e2){
      e2.printStackTrace();
    }
  }
}
为什么执行会出问题呢？

2.Re:关于异常问题！ [Re: SophiaBaby]	Copy to clipboard
Posted by: ken0719 Posted on: 2005-09-07 15:03 When you run this program, you should give a parameter. This String is a path of the file that you want to read.

3.Re:关于异常问题！ [Re: SophiaBaby]	Copy to clipboard
Posted by: wddodo Posted on: 2005-09-09 16:38 没看到错误。是你运行的有问题吧！

4.Re:关于异常问题！ [Re: SophiaBaby]	Copy to clipboard
Posted by: 低和 Posted on: 2005-09-10 11:49 java ReadFiel filename

5.Re:关于异常问题！ArrayIndexOutOfBoundsException [Re: SophiaBaby]	Copy to clipboard
Posted by: ocean Posted on: 2005-09-13 17:06 你运行的时候，要用命令行！用 "java" 命令向程序传参数： java ReadFiel args 这里的“args“就是你程序里对应的args[]数组！ args[0] 的值就是 "a"。