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Java™
by example!
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How do I have the Enter key activate the default button on a JDialog?
Use getRootPane() and setDefaultButton to make a button on a JDialog respond to the 'enter' key. I've included code that allows which ever button has focus to be the default.
... begin snippet ...
JButton ok = new JButton("OK");
JButton cancel = new JButton("CANCEL");
//kicks off when component gains focus
ok.addFocusListener(new buttonfocusEventHandler());
//kicks off when component gains focus
cancel.addFocusListener(new buttonfocusEventHandler());
... end snippet ...
class buttonfocusEventHandler extends FocusAdapter {
/** Checks buttons on dialog for focus
* and makes that button the default
*
* @param evt Holds event
*/
public void focusGained(FocusEvent evt) {
JButton button = (JButton) evt.getSource();
if (button == ok) {
JRootPane root = getRootPane();
root.setDefaultButton(button);
} //end if
if (button == cancel){
JRootPane root = getRootPane();
root.setDefaultButton(button);
} // end if
}
} // end buttonfocusEventHandler
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Further Information
Author of answer: coyoteblue
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