Czcionki w Swingu – problem

Chyba nie do obejścia.

Listing 1. Stacktrace

Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: 4
        at sun.font.FontDesignMetrics.charsWidth(Unknown Source)
        at javax.swing.text.Utilities.getTabbedTextOffset(Unknown Source)
        at javax.swing.text.Utilities.getTabbedTextOffset(Unknown Source)
        at javax.swing.text.Utilities.getTabbedTextOffset(Unknown Source)
        at javax.swing.text.PlainView.viewToModel(Unknown Source)
        at javax.swing.text.FieldView.viewToModel(Unknown Source)
        at javax.swing.plaf.basic.BasicTextUI$RootView.viewToModel(Unknown Source)
        at javax.swing.plaf.basic.BasicTextUI.viewToModel(Unknown Source)
        at javax.swing.text.DefaultCaret.moveCaret(Unknown Source)
        at javax.swing.text.DefaultCaret.mouseDragged(Unknown Source)
        at java.awt.AWTEventMulticaster.mouseDragged(Unknown Source)
        at java.awt.Component.processMouseMotionEvent(Unknown Source)
        at javax.swing.JComponent.processMouseMotionEvent(Unknown Source)
        at java.awt.Component.processEvent(Unknown Source)
        at java.awt.Container.processEvent(Unknown Source)
        at java.awt.Component.dispatchEventImpl(Unknown Source)
        at java.awt.Container.dispatchEventImpl(Unknown Source)
        at java.awt.Component.dispatchEvent(Unknown Source)
        at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
        at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
        at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
        at java.awt.Container.dispatchEventImpl(Unknown Source)
        at java.awt.Window.dispatchEventImpl(Unknown Source)
        at java.awt.Component.dispatchEvent(Unknown Source)
        at java.awt.EventQueue.dispatchEvent(Unknown Source)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
        at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
        at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
        at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
        at java.awt.EventDispatchThread.run(Unknown Source)

Kod:

Listing 2. Kod

import java.awt.GridLayout;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;

public class Test extends JPanel {
       
        private static final long serialVersionUID = 1L;

        public Test() {
            try {
              SwingUtilities.invokeAndWait(new Runnable() {
                public void run() {
                        JTextField tf = new JTextField();
                        tf.setBounds(100, 100, 100, 30);
                        add(tf);
                }
              });
            } catch (Exception exc) {
              System.out.println("Can't create because of " + exc);
            }
          }

          public static void main(String[] args) {
            JFrame frame = new JFrame();
            Test panel = new Test();
            frame.getContentPane().add(panel);
            panel.setLayout(new GridLayout());

            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            frame.setBounds(600, 300, 200, 200);
            frame.setVisible(true);
          }
}

Przepis na:
Skompiluj, uruchom, wpisz 12345, zaznacz mychą 34 i naciśnij spację. Masz 12 5. Zaznacz mychą od lewej strony tekst.
WTF?