Java Servlet API 4.0.1 Source Code Files are important if you want to compile them with different JDK releases.

You can get Java Servlet API 4.0.1 Source Code Files from Servlet API Maven Website in the "4.0.1/" folder.

You can also browse Java Servlet API 4.0.1 Source Code files below:

⏎ javax/servlet/http/MappingMatch.java

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 1997-2017 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://oss.oracle.com/licenses/CDDL+GPL-1.1
 * or LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

package javax.servlet.http;

/**
 * <p>Enumeration of Servlet mapping types.</p>
 *
 * @since 4.0
 */
public enum MappingMatch {
    /**
     * <p>This is used when the mapping was achieved
     * with an exact match to the application's context root.</p>
     */
    CONTEXT_ROOT,
    /**
     * <p>This is used when the mapping was achieved
     * with an exact match to the default servlet of the application, the '{@code /}'
     * character.</p>
     */
    DEFAULT,
    /**
     * <p>This is used when the mapping was achieved
     * with an exact match to the incoming request.</p>
     */
    EXACT,
    /**
     * <p>This is used when the mapping was achieved
     * using an extension, such as "{@code *.xhtml}".</p>
     */
    EXTENSION,
    /**
     * <p>This is used when the mapping was achieved
     * using a path, such as "{@code /faces/*}".</p>
     */
    PATH
}

⏎ javax/servlet/http/MappingMatch.java

Or download all of them as a single archive file:

File name: javax.servlet-api-4.0.1-sources.jar
File size: 203006 bytes
Release date: 2018-04-20
Download 

⇒ Download javax.servlet-api-3.0.1.jar

⇐ Download javax.servlet-api-4.0.1.jar

⇑ Downloading servlet-api.jar - Java Servlet API

⇑⇑ FAQ for Java Servlet API