Request Parameter How To Find Whether A Parameter Exists In The Reque

1.	Request Parameter How To Find Whether A Parameter Exists In The Request Object?
Answer» boolean hasFoo = !(request.getParameter("FOO") == NULL \|\| request.getParameter("foo").EQUALS("")); boolean hasParameter = request.getParameterMap().contains(theParameter); (which WORKS in Servlet 2.3+)

Request Parameter How To Find Whether A Parameter Exists In The Request Object?

Answer»

boolean hasFoo = !(request.getParameter("FOO") == NULL || request.getParameter("foo").EQUALS(""));
boolean hasParameter = request.getParameterMap().contains(theParameter); (which WORKS in Servlet 2.3+)