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NoClassDefFoundError while starting the application

I am getting this exception while starting my application.

Here is the stack trace of the exception:

In my folder structure, I have this class CustWOSet.class in the workorder folder.  I also tried to add this in the classpath explicitly in the environmental variables but still didnt work.

Tue Jul 18 15:55:05 CDT 2006 java.lang.NoClassDefFoundError: custom/app/workorder/CustWOSet
      at java.lang.ClassLoader.defineClass0(Native Method)Tue Jul 18 15:55:05 CDT 2006
      at java.lang.ClassLoader.defineClass(ClassLoader.java:488)Tue Jul 18 15:55:05 CDT 2006
      at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:106)Tue Jul 18 15:55:05 CDT 2006
      at weblogic.utils.classloaders.GenericClassLoader.findLocalClass(GenericClassLoader.java:401)Tue Jul 18 15:55:05 CDT 2006
      at weblogic.utils.classloaders.GenericClassLoader.findClass(GenericClassLoader.java:162)Tue Jul 18 15:55:05 CDT 2006
      at java.lang.ClassLoader.loadClass(ClassLoader.java:294)Tue Jul 18 15:55:05 CDT 2006
      at java.lang.ClassLoader.loadClass(ClassLoader.java:250)Tue Jul 18 15:55:05 CDT 2006
      at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:310)Tue Jul 18 15:55:05 CDT 2006
      at java.lang.Class.forName0(Native Method)Tue Jul 18 15:55:05 CDT 2006
      at java.lang.Class.forName(Class.java:115)Tue Jul 18 15:55:05 CDT 2006
      at psdi.mbo.MboSetInfo.getMboSetClass(MboSetInfo.java:115)Tue Jul 18 15:55:05 CDT 2006
      at psdi.server.AppService.getMboSet(AppService.java:350)Tue Jul 18 15:55:05 CDT 2006
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expertsit
Asked:
expertsit
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4 Solutions
 
objectsCommented:
what package is the class in?
If its in workorder package then u need to add custom/app to your classpath
and call
Class.forName("workorder.CustWOSet");
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objectsCommented:
If its in custom.app.workorder.CustWOSet then add the parent directory of custom to your classpath
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expertsitAuthor Commented:
The custom.app.workorder.CustWOSet is in a folder called Maximo which is in E:\ drive. So I should include E:\Maximo in my classpath. I already have that in the classpath.

thanks for the quick response.
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soft_techyCommented:
try

java custom.app.workorder.CustWOSet  

and see what happens
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ksivananthCommented:
make sure the class "CustWOSet" is in "E:\Maximo\custom\app\workorder" folder and u have "E:\Maximo" in classpath.
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Mayank SAssociate Director - Product EngineeringCommented:
If you're running this from the command-prompt and you're setting the class-path using My Computer -> Properties, you need to close the command-window and start a new one. If you are using some IDE like Eclipse, you need to set the class-path there instead of using the system class-path.
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expertsitAuthor Commented:
I already have E:/Maximo in my classpath. Also, I am not running this application from the command line. The ear file is deployed in the weblogic server and I start the application by typing the url in a browser.

thanks for your ideas.
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Mayank SAssociate Director - Product EngineeringCommented:
>> I already have E:/Maximo in my classpath

Weblogic ignores the system class-path.

>> I start the application by typing the url in a browser.

Browser is the client :) the server would've been started somewhere else.
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expertsitAuthor Commented:
So where else should I define the classpath if the weblogic ignores the system class-path?

thanks,
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Mayank SAssociate Director - Product EngineeringCommented:
If the class is JARed, place it in the lib directory of the project or server. Otherwise place the custom directory inside the classes directory (the entire hierarchy custom/app/workorder along with the class file should be present).
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expertsitAuthor Commented:
I am building the ear file using the build.xml

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Mayank SAssociate Director - Product EngineeringCommented:
That's fine. The classes the application needs have to be locatable.
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expertsitAuthor Commented:
Actually that error is fixed. I modified the build.xml and rebuilt the ear files and it worked.

thanks,
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