Create a JComboBox from an array of Objects. - Java Swing

Java examples for Swing:JComboBox

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Description

Create a JComboBox from an array of Objects.

Demo Code

/* Chris Cummins - 10 Mar 2012
 *
 * This file is part of Kummins Library.
 *
 * Kummins Library 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.//  ww  w.jav a2s .  c  om
 *
 * Kummins Library 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 Kummins Library.  If not, see <http://www.gnu.org/licenses/>.
 */
//package com.java2s;
import javax.swing.JComboBox;

public class Main {

    /**
     * Create a JComboBox from an array of Objects. Will print warning to
     * System.err if selectedIndex is a NullPointer.
     * 
     * @param options
     *            Objects.
     * @param selectedIndex
     *            Default selected index (array index).
     * @return JComboBox.
     */
    public static JComboBox<Object> create(Object[] options,
            int selectedIndex) {
        JComboBox<Object> box = new JComboBox<Object>();
        for (int i = 0; i < options.length; i++)
            box.insertItemAt(options[i], i);
        if (selectedIndex > 0 && selectedIndex < options.length)
            box.setSelectedIndex(selectedIndex);
        else {
            box.setSelectedIndex(0);
            /*
             * System.err.println(CreateJComboBox.class.getName() +
             * ": cannot set selected index " + selectedIndex +
             * " in JComboBox of size " + options.length + ".");
             */
        }
        return box;
    }
}

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