Class SunJPEGEncoderAdapter

  • All Implemented Interfaces:
    ImageEncoder

    public class SunJPEGEncoderAdapter
    extends Object
    implements ImageEncoder
    Adapter class for the Sun JPEG Encoder. The ImageEncoderFactory will only return a reference to this class by default if the library has been compiled under a JDK 1.4+ and is being run using a JRE 1.4+.
    • Constructor Detail

      • SunJPEGEncoderAdapter

        public SunJPEGEncoderAdapter()
        Creates a new SunJPEGEncoderAdapter instance.
    • Method Detail

      • getQuality

        public float getQuality()
        Returns the quality of the image encoding, which is a number in the range 0.0f to 1.0f (higher values give better quality output, but larger file sizes). The default value is 0.95f.
        Specified by:
        getQuality in interface ImageEncoder
        Returns:
        A float representing the quality, in the range 0.0f to 1.0f.
        See Also:
        setQuality(float)
      • setQuality

        public void setQuality​(float quality)
        Set the quality of the image encoding.
        Specified by:
        setQuality in interface ImageEncoder
        Parameters:
        quality - A float representing the quality (in the range 0.0f to 1.0f).
        See Also:
        getQuality()
      • isEncodingAlpha

        public boolean isEncodingAlpha()
        Returns false always, indicating that this encoder does not encode alpha transparency.
        Specified by:
        isEncodingAlpha in interface ImageEncoder
        Returns:
        false.
      • setEncodingAlpha

        public void setEncodingAlpha​(boolean encodingAlpha)
        Set whether the encoder should encode alpha transparency (this is not supported for JPEG, so this method does nothing).
        Specified by:
        setEncodingAlpha in interface ImageEncoder
        Parameters:
        encodingAlpha - ignored.
      • encode

        public byte[] encode​(BufferedImage bufferedImage)
                      throws IOException
        Encodes an image in JPEG format.
        Specified by:
        encode in interface ImageEncoder
        Parameters:
        bufferedImage - the image to be encoded (null not permitted).
        Returns:
        The byte[] that is the encoded image.
        Throws:
        IOException - if there is an I/O problem.
        NullPointerException - if bufferedImage is null.
      • encode

        public void encode​(BufferedImage bufferedImage,
                           OutputStream outputStream)
                    throws IOException
        Encodes an image in JPEG format and writes it to an output stream.
        Specified by:
        encode in interface ImageEncoder
        Parameters:
        bufferedImage - the image to be encoded (null not permitted).
        outputStream - the OutputStream to write the encoded image to (null not permitted).
        Throws:
        IOException - if there is an I/O problem.
        NullPointerException - if bufferedImage is null.