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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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/*
 * @test
 * @bug 8192888
 * @key headful
 * @summary Verifies JTable doesn't ignore setPreferredWidth during
 *          initial layout when AUTO_RESIZE_LAST_COLUMN is enabled
 * @run main TestJTableColWidth
 */

import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableColumnModel;
import javax.swing.SwingUtilities;

public class TestJTableColWidth {
    static JFrame frame;

    public static void main(String[] args) throws Exception {
        SwingUtilities.invokeAndWait(() -> {
            try {
                frame = new JFrame("JTable colwidth");

                String[] cols = {"ID", "Name", "Description", "Status"};
                Object[][] data = {{1, "Mimi", "Testing Java 25 Regression", "Pending"}};

                DefaultTableModel model = new DefaultTableModel(data, cols);
                final JTable tab = new JTable(model);

                tab.getTableHeader().setReorderingAllowed(false);
                tab.setAutoResizeMode(JTable.AUTO_RESIZE_LAST_COLUMN);

                TableColumnModel columnModel = tab.getColumnModel();
                // Defined widths
                int[] widths = {30, 200, 100, 50};

                for (int i = 0; i < widths.length; i++) {
                    columnModel.getColumn(i).setPreferredWidth(widths[i]);
                }

                frame.add(new JScrollPane(tab));
                frame.setSize(600, 200);
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);

                System.out.println("Actual column widths on screen:");
                for (int i = 0; i < columnModel.getColumnCount(); i++) {
                    System.out.println("Column " + i + ": " +
                                        columnModel.getColumn(i).getWidth() + "px");
                }
                if (columnModel.getColumn(0).getWidth()
                    == columnModel.getColumn(1).getWidth()) {
                    throw new RuntimeException("JTable ignores setPreferredWidth during" +
                                  " initial layout when AUTO_RESIZE_LAST_COLUMN is enabled");
                }
            } finally {
                if (frame != null) {
                    frame.dispose();
                }
            }
        });
    }
}