russell@unturf.com
0a580b313d
Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
87 lines
3.3 KiB
Java
87 lines
3.3 KiB
Java
/*
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* Copyright (c) 2026, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 8192888
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* @key headful
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* @summary Verifies JTable doesn't ignore setPreferredWidth during
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* initial layout when AUTO_RESIZE_LAST_COLUMN is enabled
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* @run main TestJTableColWidth
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*/
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import javax.swing.JFrame;
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import javax.swing.JScrollPane;
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import javax.swing.JTable;
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import javax.swing.table.DefaultTableModel;
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import javax.swing.table.TableColumnModel;
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import javax.swing.SwingUtilities;
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public class TestJTableColWidth {
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static JFrame frame;
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public static void main(String[] args) throws Exception {
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SwingUtilities.invokeAndWait(() -> {
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try {
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frame = new JFrame("JTable colwidth");
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String[] cols = {"ID", "Name", "Description", "Status"};
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Object[][] data = {{1, "Mimi", "Testing Java 25 Regression", "Pending"}};
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DefaultTableModel model = new DefaultTableModel(data, cols);
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final JTable tab = new JTable(model);
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tab.getTableHeader().setReorderingAllowed(false);
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tab.setAutoResizeMode(JTable.AUTO_RESIZE_LAST_COLUMN);
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TableColumnModel columnModel = tab.getColumnModel();
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// Defined widths
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int[] widths = {30, 200, 100, 50};
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for (int i = 0; i < widths.length; i++) {
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columnModel.getColumn(i).setPreferredWidth(widths[i]);
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}
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frame.add(new JScrollPane(tab));
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frame.setSize(600, 200);
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frame.setLocationRelativeTo(null);
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frame.setVisible(true);
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System.out.println("Actual column widths on screen:");
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for (int i = 0; i < columnModel.getColumnCount(); i++) {
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System.out.println("Column " + i + ": " +
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columnModel.getColumn(i).getWidth() + "px");
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}
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if (columnModel.getColumn(0).getWidth()
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== columnModel.getColumn(1).getWidth()) {
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throw new RuntimeException("JTable ignores setPreferredWidth during" +
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" initial layout when AUTO_RESIZE_LAST_COLUMN is enabled");
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}
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} finally {
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if (frame != null) {
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frame.dispose();
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}
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}
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});
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}
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}
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