It is use constructs in XML syntax to control the behavior of the servlet engine. JSP actions are executed when a JSP page is requested. They can be dynamically inserted into a file, re-use JavaBeans components, forward the user to another page, or generate HTML for the Java plugin.Some of the available actions are listed below:
jsp:include – includes a file, when the JSP page is requested.
jsp:useBean – finds or instantiates a JavaBean.
jsp:setProperty – sets the property of a JavaBean.
jsp:getProperty – gets the property of a JavaBean.
jsp:forward – forwards the requester to a new page.
jsp:plugin – generates browser-specific code.