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 * version 2 for more details (a copy is included in the LICENSE file that
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import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;

/*
 * @test
 * @bug 4212498
 * @library /java/awt/regtesthelpers
 * @build PassFailJFrame
 * @run main/manual bug4212498
 */

public class bug4212498 {
    static JPanel panel = new JPanel();
    static JComboBox comboBox = new JComboBox(new Object[]{
            "Coma Berenices",
            "Triangulum",
            "Camelopardis",
            "Cassiopea"});

    private static final String INSTRUCTIONS = """
            Edit the value in the text field (without using the popup)
            and then press the tab key. If the number doesn't increase,
            then test fails.

            Also, try tabbing out without making a change. The number
            should NOT increase unless the user changes something.
            """;

    public static void main(String[] args) throws Exception {
        PassFailJFrame.builder()
                .title("Instructions")
                .instructions(INSTRUCTIONS)
                .columns(50)
                .testUI(bug4212498::createTestUI)
                .build()
                .awaitAndCheck();
    }

    public static JFrame createTestUI() {
        JFrame frame = new JFrame("bug4212498");
        comboBox.setEditable(true);

        final JLabel label = new JLabel("0");

        ActionListener actionListener =
                e -> label.setText("" + (Integer.parseInt(label.getText()) + 1));

        comboBox.addActionListener(actionListener);

        panel.add(comboBox);
        panel.add(label);
        panel.add(new JButton("B"));

        frame.getContentPane().add(panel);
        frame.pack();
        frame.setLocationRelativeTo(null);
        return frame;
    }
}