JPDA and J2EE server

Question

Hi,
The document says:
The Java Platform Debugger Architecture (JPDA) consists of three interfaces designed for use by debuggers in development environments for desktop systems.
So, it is for desktop systems only. Why it can not be used in J2EE environment?
Any information would be appreciated. Thanks in advance.

Answer 1

In a servlet i use the below code:
response.setHeader("Arun","Prasath");
RequestDispatcher rd=request.getRequestDispatcher("index.jsp");
rd.forward(request,response);
the above header i set in the servlet,then i use RequestDispatcher
to forward it to a jsp.There i give the following code to retrieve the header value.
ie,In index.jsp i give the below code:
String ss=(String)request.getHeader("Arun");
out.println(ss);
The result is null when i print the String ss,instead of prasath.
If u find the answer or where is the problem reply me,please