JSP Action Tags & JSTL (JSP Standard Tag Library)

The list of standard JSP action elements are given below.+

JSP ACTION	DESCRIPTION
jsp:include	To include a resource at runtime, can be HTML, JSP or any other file
jsp:useBean	To get the java bean object from given scope or to create a new object of java bean.
jsp:getProperty	To get the property of a java bean, used with jsp:useBean action.
jsp:setProperty	To set the property of a java bean object, used with jsp:useBean action.
jsp:forward	To forward the request to another resource.
jsp:text	To write template text in JSP page.
jsp:element	To define the XML elements dynamically.
jsp:attribute	To define the dynamically generated XML element attributes
jsp:body	To define the dynamically generated XML element body
jsp:plugin	To generate the browser-specific code that makes an OBJECT or EMBED tag for the Java plugin.

Out my experience I can tell that, we mostly use jsp:include, jsp:useBean and jsp:forward actions. jsp:setProperty and jsp:getProperty are used in jsp:useBean so I will just focus on this actions. Others are not so important from both interview perspective as well as from project development perspective. You can safely ignore it +

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include directive	jsp:include action
Including the file happens at Translation Time	Including the file happens at Runtime
A copy of the original file is copied	No copy of the original file created but it refers to the  original file
Meant for static content	Meant for dynamic content
Cannot pass parameters	Can pass parameters
A copy of the original file is copied	No copy of the original file created but it refers to the  original file

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JSTL+

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JSTL Core Tags List

Tags	Description
c:out	It display the result of an expression, similar to the way <%=…%> tag work.
c:import	It Retrives relative or an absolute URL and display the contents to either a String in ‘var’,a Reader in ‘varReader’ or the page.
c:set	It sets the result of an expression under evaluation in a ‘scope’ variable.
c:remove	It is used for removing the specified scoped variable from a particular scope.
c:catch	It is used for Catches any Throwable exceptions that occurs in the body.
c:if	It is conditional tag used for testing the condition and display the body content only if the expression evaluates is true.
c:choose, c:when, c:otherwise	It is the simple conditional tag that includes its body content if the evaluated condition is true.
c:forEach	It is the basic iteration tag. It repeats the nested body content for fixed number of times or over collection.
c:forTokens	It iterates over tokens which is separated by the supplied delimeters.
c:param	It adds a parameter in a containing ‘import’ tag’s URL.
c:redirect	It redirects the browser to a new URL and supports the context-relative URLs.
c:url	It creates a URL with optional query parameters.