JPEG Output (with quality control)

import java.awt.image.RenderedImage;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Iterator;
import java.util.Locale;

import javax.imageio.IIOImage;
import javax.imageio.ImageIO;
import javax.imageio.ImageWriteParam;
import javax.imageio.ImageWriter;
import javax.imageio.plugins.jpeg.JPEGImageWriteParam;
import javax.imageio.stream.ImageOutputStream;

/**
* Utility methods that allow you to output JPEG images with the opportunity to
* specify the quality setting for the compression.
*
*/
public class JPEGOutputUtil {
    private JPEGOutputUtil() {}


    /**
    * Write the image to the stream as a JPEG with highest quality / low compression.
    * @param os
    * @param image
    * @return
    */
    public static boolean writeJPEGImageStream(OutputStream os, RenderedImage image) {
        try {
            compressJpegStream(os, image, 1.0f);
        } catch (IOException e) {
            e.printStackTrace();
            return false;
        }
        return true;
    }

    /**
    * @param outFile
    * @param image
    * @param compressionQuality
    * @throws IOException
    */
    public static void compressJpegFile(File outFile, RenderedImage image, float compressionQuality)
            throws IOException {
        OutputStream outStream = new FileOutputStream(outFile);
        compressJpegStream(outStream, image, compressionQuality);
    }

    /**
    * @param outStream
    * @param image
    * @param compressionQuality 0.0 for low quality / high compression to 1.0 for high quality / low compression
    * @throws IOException
    */
    public static void compressJpegStream(OutputStream outStream, RenderedImage image, float compressionQuality)
            throws IOException {
        // Find a jpeg writer
        ImageWriter writer = null;
        Iterator<ImageWriter> iter = ImageIO.getImageWritersByFormatName("jpg");
        if (iter.hasNext()) {
            writer = iter.next();
        }

        // Set the compression quality
        ImageWriteParam iwparam = new JPEGImageWriteParam(Locale.getDefault()) {
            public void setCompressionQuality(float quality) {
                if (quality < 0.0F || quality > 1.0F) {
                    throw new IllegalArgumentException("Quality out-of-bounds!");
                }
                this.compressionQuality = quality;
            }
        };
        iwparam.setCompressionMode(ImageWriteParam.MODE_EXPLICIT) ;
        iwparam.setCompressionQuality(compressionQuality);

        // Prepare output file
        ImageOutputStream ios = ImageIO.createImageOutputStream(outStream);
        writer.setOutput(ios);

        // Write the image
        writer.write(null, new IIOImage(image, null, null), iwparam);

        // Cleanup
        ios.flush();
        writer.dispose();
        ios.close();
    }

}