Java JComboBox exist(JComboBox x)

Description

Return true if the list is not empty, false otherwise

License

Open Source License

Parameter

Parameter	Description
x	The combobox

Return

true if the list is not empty, false otherwise

Declaration

public static boolean exist(JComboBox x) 

Method Source Code

//package com.java2s;
/* //  ww  w  .j a v a  2s.  c  om
 * 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 2
 * 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, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

import javax.swing.JComboBox;

import javax.swing.JOptionPane;

public class Main {
    /**
     * Return true if the list is not empty, false otherwise
     *
     * @param x The combobox
     * @return true if the list is not empty, false otherwise
     */
    public static boolean exist(JComboBox x) {
        if (x.getSelectedIndex() == -1) {
            JOptionPane.showMessageDialog(x, "Empty list.", "Message", JOptionPane.ERROR_MESSAGE);
            return false;
        }
        return true;
    }
}

Related

1. comboContainsElement(JComboBox combo, String element)
2. contains(JComboBox jcb, Object o, boolean caseSensitive)
3. createLabelCombo(String label, JComboBox comboBox)
4. disableListenersForComboBox(JComboBox comboBox)
5. ensureCustomBackgroundStored(JComboBox comp)
6. fixComboOrientation(JComboBox combo)
7. generateComboBoxFor(Object... objs)
8. getAgeComboBox()
9. getComboBoxDisabledBackground()