Here you can find the source of setListData(final JComboBox
public static <E> void setListData(final JComboBox<E> box, final Collection<E> items, final E selected)
//package com.java2s; /*/*from www . ja va 2s . c o m*/ * This file is part of McIDAS-V * * Copyright 2007-2014 * Space Science and Engineering Center (SSEC) * University of Wisconsin - Madison * 1225 W. Dayton Street, Madison, WI 53706, USA * http://www.ssec.wisc.edu/mcidas * * All Rights Reserved * * McIDAS-V is built on Unidata's IDV and SSEC's VisAD libraries, and * some McIDAS-V source code is based on IDV and VisAD source code. * * McIDAS-V is free software; you can redistribute it and/or modify * it under the terms of the GNU Lesser Public License as published by * the Free Software Foundation; either version 3 of the License, or * (at your option) any later version. * * McIDAS-V 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 Lesser Public License for more details. * * You should have received a copy of the GNU Lesser Public License * along with this program. If not, see http://www.gnu.org/licenses. */ import java.util.Collection; import javax.swing.JComboBox; public class Main { public static <E> void setListData(final JComboBox<E> box, final Collection<E> items, final E selected) { box.removeAllItems(); if (items != null) { for (E o : items) { box.addItem(o); } if (selected != null && !items.contains(selected)) { box.addItem(selected); } } } }