Here you can find the source of iconToBufferedImage(Icon icon)
private static BufferedImage iconToBufferedImage(Icon icon)
//package com.java2s; /*//from w w w . ja v a2s . c om * Copyright (C) 2014 Shashank Tulsyan * * 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 3 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, see <http://www.gnu.org/licenses/>. */ import java.awt.Color; import java.awt.Graphics; import java.awt.image.BufferedImage; import javax.swing.Icon; public class Main { private static BufferedImage iconToBufferedImage(Icon icon) { BufferedImage bi = new BufferedImage(icon.getIconWidth(), icon.getIconHeight(), BufferedImage.TYPE_INT_RGB); Graphics g = bi.createGraphics(); g.setColor(Color.WHITE); g.fillRect(0, 0, icon.getIconWidth(), icon.getIconHeight()); // paint the Icon to the BufferedImage. icon.paintIcon(null, g, 0, 0); return bi; } }