Here you can find the source of scaleImage(Image src, int width, int height)
public final static Image scaleImage(Image src, int width, int height)
//package com.java2s; /*#//from w ww. j a v a2s . c o m * The MIT License (MIT) * * Copyright (c) 2016 LE SAUCE Julien * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. #*/ import java.awt.Graphics2D; import java.awt.Image; import java.awt.RenderingHints; import java.awt.image.BufferedImage; import javax.swing.ImageIcon; public class Main { public final static Image scaleImage(Image src, int width, int height) { BufferedImage img = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB); Graphics2D g = (Graphics2D) img.getGraphics(); g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR); g.drawImage(src, 0, 0, width, height, null); g.dispose(); return img; } public final static ImageIcon scaleImage(ImageIcon src, int width, int height) { return new ImageIcon(scaleImage(src.getImage(), width, height)); } public final static Image scaleImage(final Image source, final double factor) { int width = (int) (source.getWidth(null) * factor); int height = (int) (source.getHeight(null) * factor); return scaleImage(source, width, height); } public final static ImageIcon scaleImage(final ImageIcon src, final double factor) { return new ImageIcon(scaleImage(src.getImage(), factor)); } }