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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
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* under the terms of the GNU General Public License version 2 only , as
* published by the Free Software Foundation .
*
* This code is distributed in the hope that it will be useful , but WITHOUT
* ANY WARRANTY ; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE . See the GNU General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
*
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* questions .
*/
/*
@ test
@ key headful
@ bug 6777378
@ summary NullPointerException in XPDefaultRenderer . paint ( )
@ author Alexander Potochkin
@ run main bug6777378
*/
import javax.swing.*;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.JTableHeader;
import javax.swing.plaf.metal.MetalLookAndFeel;
import java.awt.event.MouseEvent;
import java.awt.event.InputEvent;
import java.awt.*;
public class bug6777378 {
private static JFrame frame;
private static JTableHeader header;
public static void main(String[] args) throws Exception {
try {
Robot robot = new Robot();
robot.setAutoDelay(20 );
SwingUtilities.invokeAndWait(new Runnable() {
public void run() {
try {
UIManager.setLookAndFeel(new MetalLookAndFeel());
} catch (Exception e) {
e.printStackTrace();
}
JTable table = new JTable(new AbstractTableModel() {
public int getRowCount() {
return 10 ;
}
public int getColumnCount() {
return 10 ;
}
public Object getValueAt(int rowIndex, int columnIndex) {
return "" + rowIndex + " " + columnIndex;
}
});
header = new JTableHeader(table.getColumnModel());
header.setToolTipText("hello" );
frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(header);
frame.setSize(300 , 300 );
frame.setVisible(true );
}
});
robot.waitForIdle();
Point point = header.getLocationOnScreen();
robot.mouseMove(point.x + 20 , point.y + 50 );
robot.mouseMove(point.x + 30 , point.y + 50 );
robot.mousePress(InputEvent.BUTTON1_MASK);
robot.mouseRelease(InputEvent.BUTTON1_MASK);
} finally {
if (frame != null ) SwingUtilities.invokeAndWait(() -> frame.dispose());
}
}
}
Messung V0.5 in Prozent C=95 H=97 G=95
¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-06-10)
¤
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