Java Interview Questions

What do you understand by JSP Actions?
JSP actions are XML tags that direct the server to use existing components or control the behavior of the JSP engine. JSP Actions consist of a typical (XML-based) prefix of "jsp" followed by a colon, followed by the action name followed by one or more attribute parameters.

There are six JSP Actions:

<jsp:include/>

<jsp:forward/>

<jsp:plugin/>

<jsp:usebean/>

<jsp:setProperty/>

<jsp:getProperty/> 

What is the difference between <jsp:include page = ... > and <%@ include file = ... >?. or Difference between static include and dynamic include in JSP

• The syntax for static include is <%@ include file="filename.jsp" %> and the syntax for dynamic include is <jsp:include page="filename.jsp" />

• Static include is an inline inclusion. i.e., the contents of the file will be included at translation phase. It's something like a copy and paste :-). In case of dynamic include the response of the file will be included to the original response at runtime. The file will be processed separately and only the response will become the part of the original files' response.

• Static include cannot have a dynamic filename. This is because the servlet container needs the files for inclusion, at translation phase itself. But dynamic include can have a dynamic filename. Here the file is getting included at runtime.

• Static include cannot accept a parameter (What this parameter will do even if are passing it?). But dynamic include can accept a parameter. (Here we have some one to do something on the parameter).

• Static includes are faster than dynamic includes.