Java error attempting to run a file which exists in the specified location

iDavid · 06-08-2010, 09:36 PM

Hi, I recently set up a Linux VPS and installed JDK 6u20 on it; I tried running a class and here's the result

Code:

[root@pioneer codeusa]# dir
content  Engine.class  io  model  net  npcs  Server.class  test  util  world
[root@pioneer codeusa]# java Server 43594
Exception in thread "main" java.lang.NoClassDefFoundError: Server (wrong name: net/com/c
odeusa/Server)

The file "Server.class" is in the location I specified - why am I still getting the error?

paulsm4 · 06-08-2010, 11:29 PM

Hi -

1. In your source code, you probably declared your class "Server" to be in package "net.com.codeusa"

2. So that means "Server.class" needs to be inside directory "net/com/codeusa":

Here's a good tutorial:
http://www.jarticles.com/package/package_eng.html

'Hope that helps .. PSM

iDavid · 06-09-2010, 11:43 PM

Thanks, but, as you can see, the file "Server.class" is in the directory net/com/codeusa/ as is demonstrated by me having it show the contents of the directory at the beginning of the [code] tag:

Code:

[root@pioneer codeusa]# dir
content  Engine.class  io  model  net  npcs  Server.class  test  util  world

paulsm4 · 06-10-2010, 12:48 PM

Sigh...

1. You need your class here:

MY DIRECTORY/net/com/codeusa/Server.class

2. Then you need to execute your code (run "java") from "MY DIRECTORY"

Please read the link; I think it'll help make things much clearer.

Thanx in advance .. PSM