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copied!<p>You could use the 100% Java, Apache2 open source <a href="http://www.thebuzzmedia.com/software/imgscalr-java-image-scaling-library/">imgscalr library</a> (a single static class) and do something like this:</p> <pre><code>import org.imgscalr.Scalr.*; // static imports are awesome with the lib ... some class code ... // This is a super-contrived method name, I just wanted to incorporate // the details from your question accurately. public static void resizeImageTo600x600(BufferedImage image) { ImageIO.write(resize(image, 600), "JPG", new File("/path/to/file.jpg")); } </code></pre> <p><strong>NOTE</strong>: If the above looks odd, the static import allows me to use the <em>resize</em> call directly without specifying <em>Scalr.resize(...)</em></p> <p>Additionally, if the quality of the scaled image written out doesn't look good enough (it will be written out quickly though) you can use more arguments to the <em>resize</em> method like so:</p> <pre><code>public static void resizeImageTo600x600(BufferedImage image) { ImageIO.write(resize(image, Method.ULTRA_QUALITY, 600), "JPG", new File("/path/to/file.jpg")); } </code></pre> <p>.. and you can even apply a BufferedImageOp to the result to soften it incase the downscaling makes the image look to jaggy:</p> <pre><code>public static void resizeImageTo600x600(BufferedImage image) { ImageIO.write(resize(image, Method.ULTRA_QUALITY, 600, Scalr.OP_ANTIALIAS), "JPG", new File("/path/to/file.jpg")); } </code></pre> <p>You can start playing around with the library by just adding the following dep entry in your Maven POM (imgscalr is in the Maven central repo):</p> <pre><code><dependency> <groupId>org.imgscalr</groupId> <artifactId>imgscalr-lib</artifactId> <version>4.2</version> <type>jar</type> <scope>compile</scope> </dependency> </code></pre>

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