HeadlessJFrame.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
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import javax.swing.JFrame;
import java.awt.HeadlessException;

/*
 * @test
 * @summary Check that JFrame constructors throw HeadlessException in headless mode
 * @run main/othervm -Djava.awt.headless=true HeadlessJFrame
 */

public class HeadlessJFrame {
    public static void main(String args[]) {
        boolean exceptions = false;
        try {
            JFrame b = new JFrame();
        } catch (HeadlessException e) {
            exceptions = true;
        }
        if (!exceptions)
            throw new RuntimeException("HeadlessException did not occur when expected");

        exceptions = false;
        try {
            JFrame b = new JFrame("Swingin' in the window");
        } catch (HeadlessException e) {
            exceptions = true;
        }
        if (!exceptions)
            throw new RuntimeException("HeadlessException did not occur when expected");
    }
}