| career | drupal | java | mac | mysql | perl | scala | uml | unix  

Tomcat example source code file (

This example Tomcat source code file ( is included in the "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Tomcat tags/keywords

elexception, elexception, expression, expression, object, object, variableresolver, variableresolver

The Tomcat source code

* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements.  See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License.  You may obtain a copy of the License at
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* See the License for the specific language governing permissions and
* limitations under the License.

package javax.servlet.jsp.el;

 * <p>The abstract class for a prepared expression.

* * <p>An instance of an Expression can be obtained via from an * ExpressionEvaluator instance.</p> * * <p>An Expression may or not have done a syntactic parse of the expression. * A client invoking the evaluate() method should be ready for the case * where ELParseException exceptions are raised. </p> * * @since 2.0 * @deprecated */ public abstract class Expression { /** * Evaluates an expression that was previously prepared. In some * implementations preparing an expression involves full syntactic * validation, but others may not do so. Evaluating the expression may * raise an ELParseException as well as other ELExceptions due to * run-time evaluation. * * @param vResolver A VariableResolver instance that can be used at * runtime to resolve the name of implicit objects into Objects. * @return The result of the expression evaluation. * * @exception ELException Thrown if the expression evaluation failed. */ public abstract Object evaluate( VariableResolver vResolver ) throws ELException; }

Other Tomcat examples (source code examples)

Here is a short list of links related to this Tomcat source code file:

... this post is sponsored by my books ...

#1 New Release!

FP Best Seller


new blog posts


Copyright 1998-2021 Alvin Alexander,
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.