Netbeans: How do I break on a NullPointerException?

Posted by darren on Stack Overflow See other posts from Stack Overflow or by darren
Published on 2010-04-19T18:19:36Z Indexed on 2010/04/19 18:23 UTC
Read the original article Hit count: 227

Filed under:

netbeans

|

debugger

|

breakpoints

Hi

When debugging a java program in netbeans, I want the debugger to stop on the line that causes a NullPointerException so I can examine the variables there. I believe I have to use a condition on the breakpoint set at that line, but what is the syntax of the condition?

thanks for the help

© Stack Overflow or respective owner

Related posts about netbeans

Netbeans doesn't start, Java fatal error, unless sudo

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
Fresh 13.10 64b Openjdk 6 is there, I just installed Netbeans 7.01 from the repo, but it doesn't work, I open then a console elect@elect-desktop:~$ netbeans # # A fatal error has been detected by the Java Runtime Environment: # # SIGSEGV (0xb) at pc=0x00007faebdf79325, pid=5251, tid=140388628424448 # #… >>> More
Netbeans 7.2 Missing Modules Warning

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
Everytime I start Netbeans and the splash screen shows up when it gets to the part to load the modules I receive the following error message : Warning - could not install some modules: Editor Library 2 - None of the modules providing the capability org.netbeans.modules.editor.actions could be… >>> More
Netbeans 6.8 on Ubuntu 10.04: I add php to netbeans and when I type gksu netbeans its open netbeans

as seen on Super User - Search for 'Super User'
Netbeans 6.8 Ubuntu 10.04: I add php to netbeans and when I type $ gksu netbeans its open netbeans without php editor. Only when I type $ sudo netbeans its open it properly >>> More
[netbeans] inlcude H2 database to use netbeans GUI with it

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi all, is possible include H2 database in netbeans to use it with the GUI to create table ecc ecc? Like javadb integration i means.. >>> More
Netbeans - *Easy* way to tell which Netbeans project a file belongs to

as seen on Stack Overflow - Search for 'Stack Overflow'
I was wondering if there is a way in Netbeans (v 6.8, or whatever) to have the editor tabs colored based on which project the file belongs to? Or some other easy way to distinguish which project a file belongs to. Basically my problem is that I have 3-4 netbeans projects, which all have a very… >>> More

Related posts about debugger

QtCreator: QML Debugger, connection refused - switch of QML debugger

as seen on Stack Overflow - Search for 'Stack Overflow'
In QtCreator (2.5.2, Win7) I get a permanent / repeating output in the Debugger window. Debugging etc. all fine. Since I do not need QML debugging, how can I switch off the QML debugger? Or fix the issue in order to get rid of the repeating message. QML Debugger: Error: (0) Connection refused QML… >>> More
Debugging stored procedures, without using SSMS 2008 Debugger, or the Visual Studio debugger (output

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a SQL Server 2005 database with some Stored Procedures (SP) that I would like to debug...essentially I would just like to check variable values at certain points throughout the SP execution. I have SSMS 2008, but when I try to use the debugger, I get an error that it can't debug SQL Server… >>> More
Zend Studio Debugger returns Application Error

as seen on Stack Overflow - Search for 'Stack Overflow'
When I run debug for my public/index.php I got an application error as output. I've seen that it occurs at this line: foreach($feed->findFeedEntries($entriesLimit) as $entry) If I put a breakpoint before this, all works as expected, I mean, the error is after the line above. If I remove findFeedEntries()… >>> More
How to pass request variables like controller and action to Zend Studio debugger (zend-debugger)?

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, it's the first time I use Zend Studio to debug an application and I'm a little bit lost on how to specify request parameters when debugging as a php script. >>> More
Debug More Effectively with the ADF Debugger

as seen on Oracle Technology Network - Search for 'Oracle Technology Network'
A new article from the Oracle magazine >>> More