Below is a very simple program that illustrates the problem. It puts up a JFrame with a JLabel whose accelerator should put the focus in a JTable. The JTable has a FocusListener that prints out when the table gains or loses focus. If you compile and run this test program, typing Alt+l should put the focus in the table, and "TABLE GAINED FOCUS" should get printed to stdout. This doesn't happen until the second time you type Alt+l.

NOTE: This bug was originally encountered in the Solaris Management Console System Information tool. Also, I'm not sure if this bug is truly Solaris specific. I encountered it on SunOS 5.9 s81_33 using JDK 1.3.1-beta-b15


import java.lang.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class LabelTableTest {

    public static void main(String argv[]) {

        LabelTableTest myTest = new LabelTableTest();

    }

    public LabelTableTest () {

        JFrame frame = new JFrame();
        JPanel panel = new LabelTablePanel();
        frame.getContentPane().add(panel);

        frame.pack();
        frame.show();

    } // constructor

    /**
     * Panel containing a JLabel and a JTable
     */
    public class LabelTablePanel extends JPanel {

        JTable table;
        JLabel label;

        public LabelTablePanel() {

            super();

            label = new JLabel("Label:");
            label.setDisplayedMnemonic('l');

            table = new JTable(2, 2);
            table.addFocusListener(new TableFocusListener());
            table.setPreferredSize(new Dimension(50, 50));
            label.setLabelFor(table);

            add(label);
            add(table);

        } // constructor

        private class TableFocusListener implements FocusListener {

            public void focusGained(FocusEvent fe) {

                System.out.println("TABLE GAINED FOCUS");

            }

            public void focusLost(FocusEvent fe) {

                System.out.println("TABLE LOST FOCUS");

            }

        } // TableFocusListener

    } // LabelTablePanel

} // LabelTableest