Solved

exceptions

Posted on 2006-10-29
3
192 Views
Last Modified: 2010-03-31
Hi,

How can I throw an exception I define in java? I would like something like:

    int GetIndex(int nIndex)
    {

        if (nIndex > list.GetCount()) {
             throw ?;
        }
    }

    void Something()
    {
         try {
             list.GetIndex(88888);
         }
         catch (?) {
              print('bad index sadly.");
         }
    }

yeah that's just pseudocode,

Thanks
0
Comment
Question by:DJ_AM_Juicebox
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 16

Expert Comment

by:suprapto45
ID: 17831747
   int GetIndex(int nIndex) throws Exception
    {

        if (nIndex > list.GetCount()) {
             throw new Exception("bad index sadly.");
        }
    }

    void Something()
    {
         try {
             list.GetIndex(88888);
         }
         catch (Exception e) {
              e.printStackTrace()
              print(e.getMessage());
         }
    }
0
 
LVL 86

Accepted Solution

by:
CEHJ earned 500 total points
ID: 17832105
Assuming you have defined your exception class, you need to declare it to be thrown by the method:

int GetIndex(int nIndex) throws MyExceptionSubclass
{

        if (nIndex > list.GetCount()) {
             throw new MyExceptionSubclass("Index out of range");
        }
}

In that case, though, you would normally allow the runtime to throw an exception for those reasons
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 17848131
:-)
0

Featured Post

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This was posted to the Netbeans forum a Feb, 2010 and I also sent it to Verisign. Who didn't help much in my struggles to get my application signed. ------------------------- Start The idea here is to target your cell phones with the correct…
Java functions are among the best things for programmers to work with as Java sites can be very easy to read and prepare. Java especially simplifies many processes in the coding industry as it helps integrate many forms of technology and different d…
Viewers learn about the “while” loop and how to utilize it correctly in Java. Additionally, viewers begin exploring how to include conditional statements within a while loop and avoid an endless loop. Define While Loop: Basic Example: Explanatio…
Viewers learn about the scanner class in this video and are introduced to receiving user input for their programs. Additionally, objects, conditional statements, and loops are used to help reinforce the concepts. Introduce Scanner class: Importing…

688 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question