File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
The moose likes Beginning Java and the fly likes Array of Objects NullPointer Exception Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login

Win a copy of REST with Spring (video course) this week in the Spring forum!
JavaRanch » Java Forums » Java » Beginning Java
Bookmark "Array of Objects NullPointer Exception" Watch "Array of Objects NullPointer Exception" New topic

Array of Objects NullPointer Exception

BharathiB balasubramanian

Joined: May 29, 2004
Posts: 1
import java.applet.*;
import java.awt.*;
import java.awt.event.*;

class test12 {

int x,y;

public void show(int xx,int yy)


public class test1 extends Applet
public void init ()

test12 labelbh[]=new test12[4];


Null Pointer exception is thrown when I try to access a member function of test12
I am trying to create an array of objects
Thanks in Advance
Jose Botella
Ranch Hand

Joined: Jul 03, 2001
Posts: 2120
Welcome to the Ranch Bharathi!

arrays whose elements are of reference type are initialized to null. Initialize one of the elements of the array with something like labelbh[0] = new test12();

Notice we have a beginner's forum that seems more suitable for this question. This one is devoted to IO and streams.

SCJP2. Please Indent your code using UBB Code
Ernest Friedman-Hill
author and iconoclast

Joined: Jul 08, 2003
Posts: 24195

As per Jose's suggestion, moving to Java in General (Beginner).

[Jess in Action][AskingGoodQuestions]
I agree. Here's the link:
subject: Array of Objects NullPointer Exception
It's not a secret anymore!