Here you can find the source of toImagesList(final List extends ImageIcon> imageIcons)
public static List<Image> toImagesList(final List<? extends ImageIcon> imageIcons)
//package com.java2s; /*// w ww . j a v a 2 s .c om * This file is part of WebLookAndFeel library. * * WebLookAndFeel 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. * * WebLookAndFeel 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 WebLookAndFeel library. If not, see <http://www.gnu.org/licenses/>. */ import java.awt.Image; import java.util.ArrayList; import java.util.List; import javax.swing.ImageIcon; public class Main { /** * Returns Images list instead of ImageIcons list */ public static List<Image> toImagesList(final List<? extends ImageIcon> imageIcons) { final List<Image> images = new ArrayList<Image>(imageIcons.size()); for (final ImageIcon imageIcon : imageIcons) { images.add(imageIcon.getImage()); } return images; } }