openjdk源码
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/*
* Copyright (c) 2020, 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.
*/
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Graphics;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JTable;
import javax.swing.JTree;
import javax.swing.SwingUtilities;
/**
* @test
* @bug 6847157
* @key headful
* @summary the java2D/AWT should die silently without exceptions
* @run main/othervm RepaintOnAWTShutdown
* @run main/othervm -Dsun.java2d.uiScale=1 RepaintOnAWTShutdown
* @run main/othervm -Dsun.java2d.uiScale=1.2 RepaintOnAWTShutdown
* @run main/othervm -Dsun.java2d.uiScale=1.25 RepaintOnAWTShutdown
* @run main/othervm -Dsun.java2d.uiScale=1.5 RepaintOnAWTShutdown
* @run main/othervm -Dsun.java2d.uiScale=1.75 RepaintOnAWTShutdown
* @run main/othervm -Dsun.java2d.uiScale=2 RepaintOnAWTShutdown
* @run main/othervm -Dsun.java2d.uiScale=2.25 RepaintOnAWTShutdown
* @run main/othervm -Dsun.java2d.uiScale=5 RepaintOnAWTShutdown
* @run main/othervm -Dsun.java2d.uiScale=10 RepaintOnAWTShutdown
*/
public final class RepaintOnAWTShutdown implements Runnable {
private static final CountDownLatch go = new CountDownLatch(1);
public static void main(String[] args) throws Exception {
SwingUtilities.invokeLater(new RepaintOnAWTShutdown());
go.await(5, TimeUnit.SECONDS);
// The test will check that no exception is thrown when the jtreg will
// kill this test at the moment the frame will be painted
}
public void run() {
JFrame frame = new JFrame();
JPanel panel = new MyPanel();
panel.setPreferredSize(new Dimension(100, 100));
panel.setLayout(new FlowLayout());
panel.add(new JTree());
panel.add(new JList(new String[]{"one", "two"}));
panel.add(new JTable(new String[][]{{"one", "two"}},
new String[]{"one", "two"}));
frame.add(panel);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
// the frame is not disposed intentionally
}
private final class MyPanel extends JPanel {
public void paint(Graphics g) {
super.paint(g);
go.countDown();
}
}
}