JavaServer Pages, Second Edition

Name

TryCatchFinally

Synopsis

The TryCatchFinally interface provides methods for handling exceptions thrown while evaluating the body of an action element and can be implemented a tag handler in addition to one of the main tag handler interfaces: Tag, IterationTag, and BodyTag.

Synopsis

Interface Name:	javax.servlet.jsp.tagext.TryCatchFinally
Extends:	None
Implemented by:	Custom action tag handler classes.

Methods

public void doCatch(Throwable exception) throws Throwable

Handles the specified exception and may optionally rethrow the same exception or a new exception. This method is invoked by the container if an exception is thrown when evaluating the body or by doStartTag( ), doEndTag( ), doInitBody( ), or doAfterBody( ).

public void doFinally( )

Typically clears per-invocation state, such as closing expensive resources used only while processing one occurrence of the corresponding action element. This method is invoked after doEndTag( ) or after doCatch( ) if an exception is thrown when evaluating the body or by doStartTag( ), doEndTag( ), doInitBody( ), or doAfterBody( ).