appserver/tests/appserv-tests/devtests/web/servletInitBeforeGetServletConfig/servlet/TestServlet.java

/*
 * Copyright (c) 2011, 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
 */

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Enumeration;

import jakarta.servlet.ServletConfig;
import jakarta.servlet.ServletException;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;

public class TestServlet extends HttpServlet {
    private volatile Integer i = null;
    private volatile Boolean initBeforeGetConfig = null;

    public void init() {
        i = new Integer(1);
    }

    public ServletConfig getServletConfig() {
        if (initBeforeGetConfig == null || i == null) {
            initBeforeGetConfig = ((i != null) ? Boolean.TRUE : Boolean.FALSE);
        }
        return super.getServletConfig();
    }

    public void service(HttpServletRequest req, HttpServletResponse res)
            throws IOException, ServletException {

        PrintWriter writer = res.getWriter();
        boolean result = (initBeforeGetConfig == null || initBeforeGetConfig);
        writer.println(result);
    }
}