IOException : tmpFile renameTo classFile failed in JSP.

While coding with JSP I get random meaning less exceptions quite a time. Today when I run the Jsp suddenly ran in to the below exception.

HTTP ERROR: 500  
 tmpFile.renameTo(classFile) failed  
 RequestURI=/Index.jsp  
 Caused by:  

How to debug JSP with help of compiled Java files in Eclipse

When I'm trying to access my jsp page, some of my code causing the problem and  it ran into some exception :P. But I know there is something wrong and want to resolve the issue and I'm not sure on how to debug a jsp file in eclipse while it is executing. I'm seeing the exception after the execution and only clue is this stacktrace. So this is the exception i'm facing.