java.lang.ClassCastException in WebLogic 10.3.3 after recompile

Question

While editing some code a developer noticed this error after a recompile in Weblogic 10.3.3. And the underlying object is a DimensionLabel. And we tried this in Weblogic 9.2 and it works fine with no exception. The developer simply recompiled the class calling the DimensionLabel the SearchServiceProcessor and reran the application.

net.nrj.service.SearchServiceProcessor java.lang.ClassCastException: net.nrj.alf.DimensionLabel
java.lang.ClassCastException: net.nrj.alf.DimensionLabel
    at net.nrj.service.SearchServiceProcessor.setRefinements(SearchServiceProcessor.java:911)
    at net.nrj.service.SearchServiceProcessor.process(SearchServiceProcessor.java:134)
    at net.nrj.service.ServiceController.processRequest(ServiceController.java:323)
    at net.nrj.service.ServiceController.doGet(ServiceController.java:307)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:821)
    at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
    at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
    at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300)
    at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:184)
    at weblogic.servlet.internal.RequestDispatcherImpl.invokeServlet(RequestDispatcherImpl.java:529)
    at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:253)
    at weblogic.servlet.internal.ServletResponseImpl.sendError(ServletResponseImpl.java:719)
    at weblogic.servlet.internal.ServletResponseImpl.sendError(ServletResponseImpl.java:591)
    at weblogic.servlet.FileServlet.findSource(FileServlet.java:270)
    at weblogic.servlet.FileServlet.doGetHeadPost(FileServlet.java:191)
    at weblogic.servlet.FileServlet.service(FileServlet.java:173)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:821)
    at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
    at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
    at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300)
    at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:184)
    at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.doIt(WebAppServletContext.java:3686)
    at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3650)
    at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
    at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
    at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2268)
    at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2174)
    at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1446)
    at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
    at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)

Here is my code :

DimensionLabel dimLabel = (DimensionLabel);
dimensionLabel.get(currentDimension.getName());
currentRefinementDimension = new Refinement(); // Exception here
currentRefinementDimension.setExpanded(true);

I debugged into the code and the hashtable dimensionLabel has a DimensionLabel in it.

Answer 1

If you can debug into the code then check from where your class is being called from. Generally you need to call

this.getClass().getProtectionDomain().getCodeSource().getLocation()

This will tell you the jar from which your classes are loaded. Check if there is a jar conflict(old jar etc.)