Here you can find the source of addHotKey(JComponent pane, Action action, KeyStroke key)
public static void addHotKey(JComponent pane, Action action, KeyStroke key)
//package com.java2s; /*/* www .j a v a2s . c o m*/ Copyright (c) 1998-2013 The Regents of the University of California All rights reserved. Permission is hereby granted, without written agreement and without license or royalty fees, to use, copy, modify, and distribute this software and its documentation for any purpose, provided that the above copyright notice and the following two paragraphs appear in all copies of this software. IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. PT_COPYRIGHT_VERSION_2 COPYRIGHTENDKEY */ import javax.swing.Action; import javax.swing.JComponent; import javax.swing.KeyStroke; public class Main { /** JDK1.2 doesn't have this string defined in javax.swing.Action. * This is the value that JDK1.3 uses. */ public static final String ACCELERATOR_KEY = "AcceleratorKey"; /** Add a quick keystroke on the given pane for the given action. * The keystroke that is added is given in the ACCELERATOR_KEY * property that has been set in the action. If the ACCELERATOR_KEY * property has not been set, then do not add a hotkey. */ public static void addHotKey(JComponent pane, Action action) { addHotKey(pane, action, null); } /** Add a quick keystroke on the given pane for the given action. * If the given keystroke is null, then use the ACCELERATOR_KEY * property that has been set in the action. If the given keystroke * is null, Otherwise, set the * ACCELERATOR_KEY property to the given key stroke. */ public static void addHotKey(JComponent pane, Action action, KeyStroke key) { String name = (String) action.getValue(Action.NAME); if (key == null) { key = (KeyStroke) action.getValue(ACCELERATOR_KEY); } else { action.putValue(ACCELERATOR_KEY, key); } if (key != null) { pane.registerKeyboardAction(action, name, key, JComponent.WHEN_IN_FOCUSED_WINDOW); } } }