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/*
* Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
* 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.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 6919529
* @summary Checks if there is a null pointer exception when the component UI
* is null.
* @run main MultiUIDefaultsNPECheck
*/
import javax.swing.LookAndFeel;
import javax.swing.JLabel;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.UIDefaults;
import javax.swing.SwingUtilities;
public class MultiUIDefaultsNPECheck {
public static void main(String[] args) throws Exception {
SwingUtilities.invokeAndWait(() -> {
Test();
});
}
public static void Test() {
JLabel label = new JLabel();
try {
UIManager.setLookAndFeel(new LookAndFeel() {
@Override
public String getName() {
return null;
}
@Override
public String getID() {
return null;
}
@Override
public String getDescription() {
return null;
}
@Override
public boolean isNativeLookAndFeel() {
return false;
}
@Override
public boolean isSupportedLookAndFeel() {
return true;
}
@Override
public UIDefaults getDefaults() {
return null;
}
});
} catch (UnsupportedLookAndFeelException e) {
System.err.println("Warning: test not applicable because of " +
"unsupported look and feel");
return;
}
try {
UIManager.getDefaults().getUI(label);
} catch (NullPointerException e) {
throw new RuntimeException("Got null pointer exception. Hence " +
"Test Failed");
}
}
}
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