Error when trying to convert BufferedImage into int array

Question

I am trying to convert my BufferedImage into a integer array, but i am getting the following error: "java.awt.image.DataBufferByte cannot be cast to java.awt.image.DataBufferInt"

Here's my bit of code:

public class Test {
  public static void main (String []  args) { 
    BufferedImage img = null;
    try {
      img = ImageIO.read(new File("G.bmp"));
    } catch (IOException e) { }

    int[] imgarray = ((DataBufferInt)img.getRaster().getDataBuffer()).getData();
  }
}

Eugene Retunsky · Accepted Answer · 2012-05-03 00:29:38Z

3

Try this:

byte[] imgarray = ((DataBufferByte)img.getRaster().getDataBuffer()).getData();

answered May 3, 2012 at 0:29

Eugene Retunsky

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3 Comments

John Over a year ago

thanks this works.. now i have a byte array however, but i suppose byte is sufficient :)

Eugene Retunsky Over a year ago

Yes, a byte array is usually utilized to pass any binary data (to a stream, or to create an image from it and vice versa).

John P Over a year ago

Any idea why this isn't represented as img.getWritableData(), or even just img.buffer? Also, why do we need to separately handle the treatment of every BufferedImage type - isn't there an inheritance-friendly solution?

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