This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
I have an Web application running well on Tomcat,Weblogic and WebSphere. When I run it on iPlanet Application Server 6.0SP3 after having deploying it successfully, I got the following error message: [05/June/2002 15:00:31:1] error: Exception: SERVLET-execution_failed: Error in e xecuting servlet UIWebListener: java.lang.NullPointerException Exception Stack Trace: java.lang.NullPointerException at com.netscape.server.servlet.servletrunner.ServletInfo.checkAuthorization(Unknown Source) at com.netscape.server.servlet.servletrunner.ServletInfo.checkAuthorization(Unknown Source) at com.netscape.server.servlet.servletrunner.ServletRunner.execute(Unkno wn Source) at com.kivasoft.applogic.AppLogic.execute(Unknown Source) at com.kivasoft.applogic.AppLogic.execute(Unknown Source) at com.kivasoft.thread.ThreadBasic.run(Native Method) at java.lang.Thread.run(Thread.java:479) [05/June/2002 15:00:31:1] error: APPLOGIC-caught_exception: Caught Exception: Would you be kind enough to tell me the reason? Thanks a lot!