I want to compress an image using JPEG encoder and instead of writing it to a file I want to pass the compressed data to another application. My problem is that I can compress the data but don't know how to get that compressed image data. I am using this code : out = new FileOutputStream ( filename ); JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder ( out ); JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam ( bi ); param.setQuality ( 0.3f, false ); encoder.setJPEGEncodeParam ( param ); encoder.encode ( bi ); out.close();