Just thought of posting my learning when i faced the below issue of JSP not loading when invoked in browser
Tried - http://localhost:5555/web/TestJSP/firstPage.jsp
Got - HTTP Status 404 - Servlet jsp
Check for the following points and take action to rectify the issue.
The correspoding package where you have ur JSP’s should have a package dependency mentioned WmTomcat
Navigate to IS_DIR\packages\WmTomcat\lib\ folder create a folder called endorsed and place xercesImpl.jar. THis jar can be retrieved from common\lib folder of IS installation path.
Restart IS and try invoking the JSP