Java swing- escape key event causes classCastException in look and feel?

You mention that you switched to using JTabbedPane, but in your "actionPerformed" method code you still cast to "JDesktopPane" and the stacktrace says: Exception in thread "AWT-EventQueue-0" java.lang. ClassCastException: javax.swing. JTabbedPane cannot be cast to javax.swing.

JDesktopPane at javax.swing.plaf.basic. BasicDesktopPaneUI$Actions. ActionPerformed Probably changing it to: if(e.getSource() instanceof JTabbedPane) { JTabbedPane = (JTabbedPane)e.getSource(); } might be the change you need to do.

You are very right, but unfortunately the code that causes the exception is not mine but substance look and feel, and unfortunately I cannot change it, and if I could I don't know if that would cause other problems. Is it possible that some look and feels don't "run" properly for some applications? Should I just change the look and feel?

Thank you so much for your immediate answer! Awesome work in here! – gosling Jan 11 '10 at 11:42 Sorry, I am not aware of 'Substance' look and feel and I had posted my answer entirely looking at the stacktrace, and assuming that you can modify code in actionPerformed method.

I hope knowlegable users of Substance LF would provide a solution that would work for you. – sateesh Jan 11 '10 at 11:56.

Use keybindings this.getRootPane(). GetInputMap(JComponent. WHEN_IN_FOCUSED_WINDOW).

Put(KeyStroke. GetKeyStroke(KeyEvent. VK_ESCAPE, 0), "fecharAction"); this.getRootPane().getActionMap().

Put("fecharAction", new AbstractAction() { private static final long serialVersionUID = 1L; @Override public void actionPerformed(ActionEvent e) { int resp = JOptionPane. ShowConfirmDialog(MainForm. This, "Encerrar sistema?", "Confirmação", JOptionPane.

YES_NO_OPTION, JOptionPane. QUESTION_MESSAGE); if (resp == 0) { MainForm.this. SetVisible(false); MainForm.this.dispose(); } } }).

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