/*
 * Copyright (c) 1997, 2018 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

package test;

import java.io.*;
import jakarta.servlet.*;
import jakarta.servlet.http.*;

public class TestServlet extends HttpServlet {

    private volatile boolean initialized;

    public synchronized void init(ServletConfig config) throws ServletException {
        super.init(config);
        if (initialized) {
            throw new IllegalStateException("Trying to initialize Servlet " +
                "that is already initialized");
        }

        initialized = true;
    }

    public void doGet(HttpServletRequest req, HttpServletResponse res)
            throws IOException, ServletException {
        // Do nothing
    }

}