Java Swing Key Event rejectNonNumericKeys(KeyEvent evt)

Description

reject Non Numeric Keys

License

Open Source License

Declaration

public static void rejectNonNumericKeys(KeyEvent evt) 

Method Source Code

//package com.java2s;
/*/*from   ww  w .j a  va 2 s .  c  o  m*/
 * Copyright (C) 2016 Open Source Parking, Inc.(www.osparking.com)
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

import java.awt.Toolkit;
import java.awt.event.KeyEvent;

public class Main {
    public static void rejectNonNumericKeys(KeyEvent evt) {
        char c = evt.getKeyChar();
        if (!((c >= '0') && (c <= '9') || (c == KeyEvent.VK_BACK_SPACE) || (c == KeyEvent.VK_DELETE)
                || (c == KeyEvent.VK_ENTER))) {
            Toolkit.getDefaultToolkit().beep();
            evt.consume();
        }
    }
}

Related

1. keyEventModifiersToKeyStrokeModifiers(int modifiers)
2. keyStrokeModMac(String keyStrokeStr)
3. press(int key)
4. pressKey(final int key)
5. recipientHintSelected(String hintString, TextField toList, boolean shiftKeyPressed)
6. retargetKeyEvent(KeyEvent e, Component target)
7. setKeystroke(JMenuItem m, int key)
8. simulateKeyPressed(Component component, int key)