Here you can find the source of scaleImageIcon(ImageIcon icon, float scale, int hints)
public static ImageIcon scaleImageIcon(ImageIcon icon, float scale, int hints)
//package com.java2s; /*//from w w w . jav a2 s .c om * Copyright (C) 2006 The Concord Consortium, Inc., * 25 Love Lane, Concord, MA 01742 * * 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 * * END LICENSE */ import javax.swing.ImageIcon; public class Main { /** get a scaled instance of the input ImageIcon */ public static ImageIcon scaleImageIcon(ImageIcon icon, float scale, int hints) { if (icon == null) return null; if (scale > 1.0f || scale <= 0.0f) throw new IllegalArgumentException("scale must be in (0, 1]."); int w = icon.getIconWidth(); int h = icon.getIconHeight(); return new ImageIcon(icon.getImage().getScaledInstance((int) (w * scale), (int) (h * scale), hints)); } }