Re: IOException....try...catch...

From:

"Jeff Higgins" <oohiggins@yahoo.com>

Newsgroups:

comp.lang.java.programmer

Date:

Mon, 26 Mar 2007 20:54:17 -0400

Message-ID:

<QWZNh.2122$Ft.910@newsfe05.lga>

bhavish wrote:

Dear All,
can someone please post me the correct code for the
following code. I'd like to put the condition, mark must be minimum 0
and maximum 100 using Exception ( try ... catch ).

I'm not sure I've understood your request, but...

Alice -1
John Smith 50
Mary Lou 70
Alexander Popandopula 90
Zeppo 101

Alice -1 An Erroneous mark
Zeppo 101 An Erroneous mark

import java.io.*;

public class Task3 {

  private String name;
  private String mark;

  public static void main(String args []) throws IOException {

    Task3 task3 = new Task3();
    task3.readFile();
  }

  public void readFile()
  throws FileNotFoundException, IOException {
    String line;
    int marks;
    BufferedReader in = new BufferedReader(new FileReader("MarkFile.txt"));

    while (( line = in.readLine()) != null && line.length() > 48){
      name = line.substring(0,48);
      mark = line.substring(48).trim();
      try{
        marks=Integer.parseInt(mark);
        if(marks < 0 || marks > 100){
          throw new IllegalArgumentException();
        }
      }
      catch(Exception e){
        displayErrors();
      }
    }
  }

  public void displayErrors() {
    System.out.println(name + " " + mark + " An Erroneous mark");
  }
}