java Array Index Out of Proportions

Question

0.00/5 (No votes)

See more:

This code is supposed to show the percentage of leading digits in an array and return another array. When I tested it, I kept getting the message that exception in thread main java.lang.arrayindexoutofboundsexception4. Could someone tell me why?

Posted 20-Oct-12 10:35am

javamontrealman

Updated 21-Oct-12 7:11am

v6

Add a Solution

Comments

CPallini 20-Oct-12 17:07pm

What code?

javamontrealman 20-Oct-12 17:24pm

hi, sorry i was editing a little bit

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Sandeep Mewara · Accepted Answer · 2012-10-20T10:55:00

Solution 1

Hint: Look at this line

Java

digitpercentage [p] = calculateLeadingDigit ((int) numbers [p])/numbers.length;

Your p value ranges from 0 to 9. But does numbers length varies same? You do numbers[p], is not there a possibility of index out of range?

Debug step wise and see how the execution is happening and what are the values assigned.

Posted 20-Oct-12 10:55am

Sandeep Mewara

Updated 20-Oct-12 10:56am

v2

Comments

javamontrealman 20-Oct-12 17:25pm

im fairly new, could you maybe get me started by giving some hints

Nelek 20-Oct-12 18:40pm

That's what he did. He recommended you to start using the debugger and I agree with him. It can help you find the errors and learn from them, what actually is the best way of learning

Sandeep Mewara 21-Oct-12 1:48am

I exactly did that. Gave a hint and the way to resolve it.