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Editorial Team
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Asked: 2026-06-15T14:05:43+00:00

Hello I am working on a project and any time I try to run

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Hello I am working on a project and any time I try to run I have this error message and I’m still having a problem to figure out about the error. Thanks for any help.

HTTP Status 500 -

type Exception report

message

descriptionThe server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: The HTTP Monitor server side component intercepted and rethrew an error while processing a JSP or servlet. Please see the stack trace under the root cause message below to identify the problem.

root cause

java.lang.NoClassDefFoundError: JavaBeans/Book

root cause

java.lang.ClassNotFoundException: JavaBeans.Book

note The full stack traces of the exception and its root causes are available in the GlassFish Server Open Source Edition 3.1.2.2 logs.
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1 Answer

  1. Editorial Team

    You’ve most likely named your classes like the ones in the

    Java EE 6 With Glassfish 3

    book. Be careful on how you name your paths. The compiler cannot find the Book class.

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