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  1. JDK
  2. JDK-4264297

JTable: Pressing F2 on non-editable cell throws NullPointerException (cf 93412)

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    • kestrel
    • generic
    • generic

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      Name: krT82822 Date: 08/20/99


      JTable: Pressing F2 on a non-editable cell throws
      NullPointerException:

      Simple example:

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

      public class JTableBugDemo {
          public static void main(String s[]) {
              JFrame frame = new JFrame();

              frame.addWindowListener(new WindowAdapter() {
                  public void windowClosing(WindowEvent e) {
                      System.exit(0);
                  }
              });
      JPanel p = new JPanel();
      p.add(new JTable(new AbstractTableModel() {
      Object[][] data = {{"1", "2"}, {"3", "4"}};
      public boolean isCellEditable(int row, int column) {
      return false;
      }
      public int getRowCount() {
      return 2;
      }
      public int getColumnCount() {
      return 2;
      }
      public Object getValueAt(int row, int column) {
      return data[row][column];
      }
      }));

      frame.getContentPane().add(p);
      p.setVisible(true);
      frame.pack();
              frame.setVisible(true);
          }
      }

      Run, and press F2 on any cell.

      Trace:
      Exception occurred during event dispatching:
      java.lang.NullPointerException:
              at javax.swing.plaf.basic.BasicTableUI$3.actionPerformed(BasicTableUI.java:675)
              at javax.swing.JComponent.processKeyBinding(JComponent.java:1636)
              at javax.swing.JComponent.processKeyBindings(JComponent.java:1649)
              at javax.swing.JComponent.processKeyEvent(JComponent.java:1561)
              at java.awt.Component.processEvent(Component.java, Compiled Code)
              at java.awt.Container.processEvent(Container.java, Compiled Code)
              at java.awt.Component.dispatchEventImpl(Component.java, Compiled Code)
              at java.awt.Container.dispatchEventImpl(Container.java, Compiled Code)
              at java.awt.Component.dispatchEvent(Component.java, Compiled Code)
              at java.awt.LightweightDispatcher.processKeyEvent(Container.java:1766)
              at java.awt.LightweightDispatcher.dispatchEvent(Container.java, Compiled Code)
              at java.awt.Container.dispatchEventImpl(Container.java, Compiled Code)
              at java.awt.Window.dispatchEventImpl(Window.java, Compiled Code)
              at java.awt.Component.dispatchEvent(Component.java, Compiled Code)
              at java.awt.EventQueue.dispatchEvent(EventQueue.java, Compiled Code)
              at java.awt.EventDispatchThread.pumpOneEvent(EventDispatchThread.java, Compiled Code)
              at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:92)
              at java.awt.EventDispatchThread.run(EventDispatchThread.java:83)
      (Review ID: 94164)
      ======================================================================

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            pmilnesunw Philip Milne (Inactive)
            kryansunw Kevin Ryan (Inactive)
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              Created:
              Updated:
              Resolved:
              Imported:
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