Here you can find the source of selectedFiles(JFileChooser chooser)
public static File[] selectedFiles(JFileChooser chooser)
//package com.java2s; /*//from w w w . j av a2 s .c om * The Unified Mapping Platform (JUMP) is an extensible, interactive GUI * for visualizing and manipulating spatial features with geometry and attributes. * * Copyright (C) 2003 Vivid Solutions * * 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. * * For more information, contact: * * Vivid Solutions * Suite #1A * 2328 Government Street * Victoria BC V8T 5G5 * Canada * * (250)385-6040 * www.vividsolutions.com */ import java.io.File; import javax.swing.*; public class Main { /** * Work around Java Bug 4437688 "JFileChooser.getSelectedFile() returns * nothing when a file is selected" [Jon Aquino] */ public static File[] selectedFiles(JFileChooser chooser) { return ((chooser.getSelectedFiles().length == 0) && (chooser.getSelectedFile() != null)) ? new File[] { chooser.getSelectedFile() } : chooser.getSelectedFiles(); } }