How to pass a value of a variable from a java class to the jsp page

Question

I have 2 files named Admin.java and index.jsp.

In Admin.java through a function I retrieve the value of the varible named

Answer 1

If this is an ajax request, you can forward the request into another jsp page rather than return. With this

getServletContext().getRequestDispatcher("/ajax.jsp").forward(request, response);

create the jsp page(ajax.jsp) on your webcontent and add this sample code.

${rest}
 

Another way is replace your System.out.println with this

PrintWriter out = response.getWriter();
out.print("The value of res been passed is "+res);

but I guess this is a bad practice. See example here.