Exception handling

• If a JSP causes an exception to be thrown, good practices dictate that the exception is handled by code, or that the user be forwarded to an error page.
• Exceptions can be caught in scriptlets.
• Use the <%@ page errorPage="/error.jsp" %> directive to define an error page.
• Identify the error page with the page directive, <%@ page isErrorPage="true" %>.
• The JSP container makes the implicit exception object available to a defined error page.