Re: gotta take a shot

From: David Harper (devnull_at_obliquity.u-net.com)
Date: 07/22/04 

Date: Thu, 22 Jul 2004 17:45:29 GMT

D.Alvarado wrote:
> Ok, this error is pretty out there, but here goes.
[SNIP]
> java.lang.AbstractMethodError
> at com.hrw.xls.GenerateXLSFile.CreateXLSFileWithQuery(GenerateXLSFile.java:78)
> at com.hrw.xls.GenerateXLSFile.CreateXLSFile(GenerateXLSFile.java:41)
> at com.hrw.xls.GenerateXLSFile.createFile(GenerateXLSFile.java:33)
> at jsp_servlet._db_portal.__db_results.getFileLocation(__db_results.java:104)
> at jsp_servlet._db_portal.__db_results._jspService(__db_results.java:213)
> at weblogic.servlet.jsp.JspBase.service(JspBase.java:27)
> at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:120)
> at weblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletContextImpl.java:945)
> at weblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletContextImpl.java:909)
> at weblogic.servlet.internal.ServletContextManager.invokeServlet(ServletContextManager.java:269)
> at weblogic.socket.MuxableSocketHTTP.invokeServlet(MuxableSocketHTTP.java:392)
> at weblogic.socket.MuxableSocketHTTP.execute(MuxableSocketHTTP.java:274)
> at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:130)

It appears to me that the com.hrw classes are something that your own
organisation (harcourt.com/hrw.com) has created, so we're not likely to
be able to help you with the fine details unless you post the source
code for com.hrw.xls.GenerateXLSFile

But my guess is that CreateXLSFileWithQuery is calling a function of an
abstract class at line 78 of the source code of GenerateXLSFile.java

The API docs for AbstractMethodError says:

     Thrown when an application tries to call an abstract method.
     Normally, this error is caught by the compiler; this error
     can only occur at run time if the definition of some class has
     incompatibly changed since the currently executing method was
     last compiled.

Either post the source code for us to see, or talk to your colleague who
wrote that class.

David Harper
Cambridge, England

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