# Package javax.servlet.jsp

Classes and interfaces for the Core JSP 2.0 API.

The javax.servlet.jsp package contains a number of classes and interfaces that describe and define the contracts between a JSP page implementation class and the runtime environment provided for an instance of such a class by a conforming JSP container.

Interface Summary
HttpJspPage: The HttpJspPage interface describes the interaction that a JSP Page Implementation Class must satisfy when using the HTTP protocol.
JspApplicationContext: Stores application-scoped information for the JSP container.
JspPage: The JspPage interface describes the generic interaction that a JSP Page Implementation class must satisfy; pages that use the HTTP protocol are described by the HttpJspPage interface.

Class Summary
ErrorData: Contains information about an error, for error pages.
JspContext: `JspContext` serves as the base class for the PageContext class and abstracts all information that is not specific to servlets.
JspEngineInfo: The JspEngineInfo is an abstract class that provides information on the current JSP engine.
JspFactory: The JspFactory is an abstract class that defines a number of factory methods available to a JSP page at runtime for the purposes of creating instances of various interfaces and classes used to support the JSP implementation.
JspWriter: The actions and template data in a JSP page is written using the JspWriter object that is referenced by the implicit variable out which is initialized automatically using methods in the PageContext object.
PageContext: PageContext extends JspContext to provide useful context information for when JSP technology is used in a Servlet environment.

Exception Summary
JspException: A generic exception known to the JSP engine; uncaught JspExceptions will result in an invocation of the errorpage machinery.
JspTagException: Exception to be used by a Tag Handler to indicate some unrecoverable error.
SkipPageException: Exception to indicate the calling page must cease evaluation.