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s LICENSE file that
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*/
/* @test
@ bug 8253016
@ key headful
@ summary Verifies Box . Filler components should be unfocusable by default
@ run main TestBoxFiller
*/
import java.awt.ContainerOrderFocusTraversalPolicy;
import java.awt.KeyboardFocusManager;
import java.beans.PropertyChangeEvent;
import javax.swing.Box;
import javax.swing.JFrame;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
import java.awt.Robot;
import java.awt.event.KeyEvent;
public class TestBoxFiller
{
private static JFrame frame;
private static void showFocusOwner(PropertyChangeEvent e)
{
Object c = e.getNewValue();
if (c instanceof Box.Filler) {
throw new RuntimeException("Box.Filler having focus" );
}
}
public static void main(String[] args) throws Exception
{
try {
Robot robot = new Robot();
robot.setAutoDelay(100 );
SwingUtilities.invokeAndWait(() -> {
frame = new JFrame();
KeyboardFocusManager m = KeyboardFocusManager.getCurrentKeyboardFocusManager();
m.addPropertyChangeListener("focusOwner" , TestBoxFiller::showFocusOwner);
Box box = Box.createHorizontalBox();
JTextField tf1 = new JTextField("Test" );
tf1.setColumns(40 );
JTextField tf2 = new JTextField("Test" );
tf2.setColumns(40 );
box.add(tf1);
box.add(Box.createHorizontalStrut(20 ));
box.add(tf2);
frame.setContentPane(box);
frame.setFocusTraversalPolicy(new ContainerOrderFocusTraversalPolicy());
frame.pack();
frame.setVisible(true );
frame.setLocationRelativeTo(null );
tf1.requestFocusInWindow();
});
robot.waitForIdle();
robot.keyPress(KeyEvent.VK_TAB);
robot.keyRelease(KeyEvent.VK_TAB);
} finally {
if (frame != null ) {
ingUtilitiesinvokeAndWaitframedispose
}
}
}
}
Messung V0.5 in Prozent C=93 H=95 G=93
¤ Dauer der Verarbeitung: 0.15 Sekunden
(vorverarbeitet am 2026-06-10)
¤
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