/* * Copyright (c) 2001, 2025, 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 4393042 * @summary JProgressBar should update painting when maximum value is very large * @key headful */ import java.awt.Graphics; import javax.swing.JFrame; import javax.swing.JProgressBar; import javax.swing.SwingUtilities; import javax.swing.UIManager; public class bug4393042 extends JProgressBar { static final int MAXIMUM = Integer.MAX_VALUE - 100; static volatile int value = 0; static volatile bug4393042 progressBar; static JFrame frame; static volatile int paintCount = 0; public void paintComponent(Graphics g) { super.paintComponent(g); System.out.println("paint count=" + (++paintCount)); } public bug4393042(int min, int max) { super(min, max); } public static void main(String[] args) throws Exception { UIManager.setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel"); try { SwingUtilities.invokeAndWait(bug4393042::createUI); value = 0; for (int i = 0; i <= 10; i++) { Thread.sleep(1000); SwingUtilities.invokeAndWait(() -> { progressBar.setValue(value); }); value += MAXIMUM / 10; } } finally { SwingUtilities.invokeAndWait(() -> { if (frame != null) { frame.dispose(); } }); } if (paintCount < 10 || paintCount > 100) { throw new RuntimeException("Unexpected paint count : " + paintCount); } } static void createUI() { frame = new JFrame("bug4393042"); progressBar = new bug4393042(0, MAXIMUM); progressBar.setStringPainted(true); progressBar.setValue(0); frame.add(progressBar); frame.setSize(400, 200); frame.setVisible(true); } }