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    Thrown when an application is trying to use or access an object whose reference equals to null. You are probably trying to use a reference that points to no location in memory as though it were referencing an object.

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This exception has no message.
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This exception has no message.
java.lang.NullPointerException: 	at java.util.Hashtable.put(Hashtable.java:380)	at weblogic.servlet.internal.session.JDBCSessionContext.getJdbcProps(JDBCSessionContext.java:152)	at weblogic.servlet.internal.session.JDBCSessionContext.getNewSession(JDBCSessionContext.java:50)	at weblogic.servlet.internal.session.SessionContext.getNewSessionInstance(SessionContext.java:121)	at weblogic.servlet.internal.ServletRequestImpl.getNewSession(ServletRequestImpl.java:1543)	at weblogic.servlet.internal.ServletRequestImpl.getSession(ServletRequestImpl.java:1406)	at EBWebServer.EBServlet.service(EBServlet.java:91)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)	at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:213)	at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:1265)	at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:1622)	at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:137)	at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)