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  java.lang.NoClassDefFoundError (Linux)  (Read 1386 times)
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Offline Andrewaclt

Junior Newbie




Java games rock!


« Posted 2004-09-05 17:23:46 »

I'm trying to get the java SDK working on Mandrake 10. I get the following errors:

[andrew@localhost java]$ java HelloWorld.class
Exception in thread "main" java.lang.NoClassDefFoundError: HelloWorld/class

echo $CLASSPATH returns nothing.

I looked around and it seems there were several ways to set your classpath but each way was a little diffrent and involved editing /etc/profile or $HOME/.bashrc (even /.bash_profile in some cases)

What exactly needs to be done?
Offline kevglass

JGO Kernel


Medals: 164
Projects: 23
Exp: 18 years


Coder, Trainee Pixel Artist, Game Reviewer


« Reply #1 - Posted 2004-09-05 17:28:06 »

Specify the class without the file externsion (.class)

i.e.

java HelloWorld

Kev

Offline Andrewaclt

Junior Newbie




Java games rock!


« Reply #2 - Posted 2004-09-05 17:40:23 »

wow...uhhh I feel stupid.
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Offline kevglass

JGO Kernel


Medals: 164
Projects: 23
Exp: 18 years


Coder, Trainee Pixel Artist, Game Reviewer


« Reply #3 - Posted 2004-09-05 17:41:36 »

Wouldn't worry too much, you did post it in "Newless Cluebies"..

Kev

Offline Andrewaclt

Junior Newbie




Java games rock!


« Reply #4 - Posted 2004-09-05 18:55:54 »

Actually, I feel like asking the question:

Why do they make you do it for the .java file and not the .class file, it makes no sense Tongue
Offline pepe

Junior Member




Nothing unreal exists


« Reply #5 - Posted 2004-09-06 05:22:56 »

because the jvm would look for a class called "class" in the 'helloworld' package.
when you're compiling, you are accessing a file.
When  you are launching a class (calling its main() method, in fact), the class can eventually be in an other form than a .class file stored on a medium. The file extension is only revelant in the filesystem context, thus has not to be set when giving reference of a class to find.

Home page: http://frederic.barachant.com
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