convert byte array into image(png)

Question

I have a byte[] which is returned by fetching data from some table. I want to convert this byte array into png image. Note: I do not have byte array from an image as in similar examples elsewhere.

 byte[] bytes = modelDashboardService.exportMyQueuePNG("pp83900","1");

InputStream in = new ByteArrayInputStream(bytes);

BufferedImage bImageFromConvert = ImageIO.read(in);//ImageIO.read(url);//

if(bImageFromConvert != null){
  ImageIO.write(bImageFromConvert, "png", new File(
  "D:/test1.png"));

}

My byte[] is not null but my BufferedImage is null .

please help.

Byte[] is : [37, 80, 68, 70, 45, 49, 46, 55, 10, 37, -30, -29, -49, -45, 10, 51, 32, 48, 32, 111, 98, 106, 10, 60, 60, 47, 76, 101, 110, 103, 116, 104, 32, 52, 57, 50, 47, 70, 105, 108, 116, 101, 114, 47, 70, 108, 97, 116, 101, 68, 101, 99, 111, 100, 101, 62, 62, 115, 116, 114, 101, 97, 109, 10, 120, -100, -115, -107, 65, 111, -29, 32, 16, -123, -17, -2, 21, 115, -20, 30, 66, -127, 1, -116, -113, -39, -124, -83, -68, 90, -59, -87, 67, -38, -12, -76, 90, -75, 77, -91, 85, -93, -86, -67, -12, -17, -17, 24, -127, 55, -119, 113, -99, 67, 34, -20, -9, -15, 24, 63, 6, -101, -125, -128, -103, 0, 14, -70, -46, -12, -1, 120, 40, -34, -117, -17, -66, -96, 107, -91, -63, 63, -47, 96, -90, 120, 55, 112, -66, -72, 37, -115, 51, 11, -35, 79, -64, -57, 75, 97, 21, -109, -96, -71, 6, -93, -104, -48, 64, -32, -57, 115, -79, 63, 101, -124, -78, 12, 117, -96, 80, 50, 110, 71, 40, -53, -103, -62, 64, 9, 73, 19, -14, 20, 114, -53, 74, -100, 90, 17, 75, -55, 108, 53, 69, 41, 44, 25, 87, 83, -108, -26, -126, -119, 73, 47, 109, 52, -61, 73, 47, 35, 43, -90, 39, -95, 10, -103, -55, 81, 93, -8, 18, 126, -46, -122, -36, -48, 12, 13, -97, -7, -12, 55, 81, 28, -119, -67, -105, -13, 121, 39, 121, 36, -24, 94, -50, 39, -100, -28, -111, 104, -109, 60, -110, 105, 47, -25, -61, 76, 114, 62, -59, 94, -51, -57, -73, -95, -8, -88, -85, -69, 62, -25, -108, -77, 53, 93, 114, 40, -64, 31, -118, -21, 31, -126, 34, 0, -65, 47, -82, -36, -50, 45, -74, -66, -2, -26, -1, -98, -111, 84, 45, -111, 87, -51, 10, -4, -61, -38, 117, 58, -99, -122, 35, 63, -95, 121, 8, 123, -32, 88, 47, 51, -80, -107, 33, -6, 1, -68, 104, 86, -66, 109, 126, -63, 124, -31, -21, -69, -38, 63, 12, -89, -94, -32, 97, 91, 6, 83, 55, 126, -34, -6, -29, -70, 19, 25, 43, 95, -50, 125, -90, 108, 44, 85, -40, -58, -127, -35, 114, -21, 78, -52, 34, -9, -91, -103, -62, 42, 108, -6, -40, 99, 29, 27, 38, 54, 26, -34, -76, -51, 118, -3, -69, -55, 17, -68, 12, -60, -3, -54, -75, -61, 37, 53, -57, -48, 72, -105, 44, -103, -40, -72, -92, -37, -47, 78, 55, 57, 79, 83, -122, -18, -69, -56, 51, -78, -47, -77, 117, 119, -75, -69, 119, 57, 34, 62, 70, 102, 61, -125, -126, -27, 58, 39, -77, 92, 68, -113, 67, -53, -8, 85, 58, 28, -128, -117, 12, 35, 27, 29, -87, -119, -4, 118, 19, 45, -33, 51, 47, 28, -28, -35, 113, 58, 20, 88, -123, -63, -21, -1, -9, 65, 21, -107, 82, -97, 41, -15, 6, 41, -74, 87, 110, 79, -21, 53, -52, 32, 72, 115, 86, -18, -6, -49, -53, 51, -55, 111, -5, 84, 15, -92, 25, -99, -91, 84, -12, -91, -126, -21, -35, 94, -64, -14, 13, 78, 12, -93, 76, 110, -40, -35, -96, 47, -41, 44, 13, -56, -26, 31, 113, 64, 107, -53, 10, 101, 110, 100, 115, 116, 114, 101, 97, 109, 10, 101, 110, 100, 111, 98, 106, 10, 53, 32, 48, 32, 111, 98, 106, 10, 60, 60, 47, 80, 97, 114, 101, 110, 116, 32, 52, 32, 48, 32, 82, 47, 67, 111, 110, 116, 101, 110, 116, 115, 32, 51, 32, 48, 32, 82, 47, 84, 121, 112, 101, 47, 80, 97, 103, 101, 47, 82, 101, 115, 111, 117, 114, 99, 101, 115, 60, 60, 47, 88, 79, 98, 106, 101, 99, 116, 60, 60, 47, 88, 102, 49, 32, 49, 32, 48, 32, 82, 62, 62, 47, 70, 111, 110, 116, 60, 60, 47, 70, 49, 32, 50, 32, 48, 32, 82, 62, 62, 62, 62, 47, 77, 101, 100, 105, 97, 66, 111, 120, 91, 48, 32, 48, 32, 53, 57, 53, 32, 56, 52, 50, 93, 47, 82, 111, 116, 97, 116, 101, 32, 57, 48, 62, 62, 10, 101, 110, 100, 111, 98, 106, 10, 50, 32, 48, 32, 111, 98, 106, 10, 60, 60, 47, 66, 97, 115, 101, 70, 111, 110, 116, 47, 72, 101, 108, 118, 101, 116, 105, 99, 97, 47, 84, 121, 112, 101, 47, 70, 111, 110, 116, 47, 69, 110, 99, 111, 100, 105, 110, 103, 47, 87, 105, 110, 65, 110, 115, 105, 69, 110, 99, 111, 100, 105, 110, 103, 47, 83, 117, 98, 116, 121, 112, 101, 47, 84, 121, 112, 101, 49, 62, 62, 10, 101, 110, 100, 111, 98, 106, 10, 49, 32, 48, 32, 111, 98, 106, 10, 60, 60, 47, 84, 121, 112, 101, 47, 88, 79, 98, 106, 101, 99, 116, 47, 82, 101, 115, 111, 117, 114, 99, 101, 115, 60, 60, 47, 70, 111, 110, 116, 60, 60, 47, 70, 49, 32, 50, 32, 48, 32, 82, 62, 62, 62, 62, 47, 83, 117, 98, 116, 121, 112, 101, 47, 70, 111, 114, 109, 47, 66, 66, 111, 120, 91, 48, 32, 48, 32, 51, 48, 32, 49, 54, 93, 47, 77, 97, 116, 114, 105, 120, 32, 91, 49, 32, 48, 32, 48, 32, 49, 32, 48, 32, 48, 93, 47, 76, 101, 110, 103, 116, 104, 32, 52, 52, 47, 70, 111, 114, 109, 84, 121, 112, 101, 32, 49, 47, 70, 105, 108, 116, 101, 114, 47, 70, 108, 97, 116, 101, 68, 101, 99, 111, 100, 101, 62, 62, 115, 116, 114, 101, 97, 109, 10, 120, -100, 43, -28, 114, 10, -31, 50, 84, 48, 0, 66, 67, 5, 35, 32, 12, -55, -27, -46, 119, 51, 84, 48, 4, -78, -46, -72, 52, 12, 53, 67, -78, -72, 92, 67, -72, 2, -71, 0, -88, 92, 8, 34, 10, 101, 110, 100, 115, 116, 114, 101, 97, 109, 10, 101, 110, 100, 111, 98, 106, 10, 52, 32, 48, 32, 111, 98, 106, 10, 60, 60, 47, 84, 121, 112, 101, 47, 80, 97, 103, 101, 115, 47, 67, 111, 117, 110, 116, 32, 49, 47, 75, 105, 100, 115, 91, 53, 32, 48, 32, 82, 93, 62, 62, 10, 101, 110, 100, 111, 98, 106, 10, 54, 32, 48, 32, 111, 98, 106, 10, 60, 60, 47, 84, 121, 112, 101, 47, 67, 97, 116, 97, 108, 111, 103, 47, 80, 97, 103, 101, 115, 32, 52, 32, 48, 32, 82, 62, 62, 10, 101, 110, 100, 111, 98, 106, 10, 55, 32, 48, 32, 111, 98, 106, 10, 60, 60, 47, 80, 114, 111, 100, 117, 99, 101, 114, 40, 105, 84, 101, 120, 116, -82, 32, 53, 46, 53, 46, 53, 32, -87, 50, 48, 48, 48, 45, 50, 48, 49, 52, 32, 105, 84, 101, 120, 116, 32, 71, 114, 111, 117, 112, 32, 78, 86, 32, 92, 40, 65, 71, 80, 76, 45, 118, 101, 114, 115, 105, 111, 110, 92, 41, 41, 47, 77, 111, 100, 68, 97, 116, 101, 40, 68, 58, 50, 48, 49, 54, 48, 51, 50, 51, 49, 54, 51, 54, 53, 55, 43, 48, 53, 39, 51, 48, 39, 41, 47, 67, 114, 101, 97, 116, 105, 111, 110, 68, 97, 116, 101, 40, 68, 58, 50, 48, 49, 54, 48, 51, 50, 51, 49, 54, 51, 54, 53, 55, 43, 48, 53, 39, 51, 48, 39, 41, 62, 62, 10, 101, 110, 100, 111, 98, 106, 10, 120, 114, 101, 102, 10, 48, 32, 56, 10, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 32, 54, 53, 53, 51, 53, 32, 102, 32, 10, 48, 48, 48, 48, 48, 48, 48, 56, 48, 54, 32, 48, 48, 48, 48, 48, 32, 110, 32, 10, 48, 48, 48, 48, 48, 48, 48, 55, 49, 56, 32, 48, 48, 48, 48, 48, 32, 110, 32, 10, 48, 48, 48, 48, 48, 48, 48, 48, 49, 53, 32, 48, 48, 48, 48, 48, 32, 110, 32, 10, 48, 48, 48, 48, 48, 48, 49, 48, 50, 50, 32, 48, 48, 48, 48, 48, 32, 110, 32, 10, 48, 48, 48, 48, 48, 48, 48, 53, 55, 52, 32, 48, 48, 48, 48, 48, 32, 110, 32, 10, 48, 48, 48, 48, 48, 48, 49, 48, 55, 51, 32, 48, 48, 48, 48, 48, 32, 110, 32, 10, 48, 48, 48, 48, 48, 48, 49, 49, 49, 56, 32, 48, 48, 48, 48, 48, 32, 110, 32, 10, 116, 114, 97, 105, 108, 101, 114, 10, 60, 60, 47, 82, 111, 111, 116, 32, 54, 32, 48, 32, 82, 47, 73, 68, 32, 91, 60, 98, 101, 55, 48, 97, 57, 52, 52, 57, 97, 102, 57, 50, 56, 55, 97, 54, 48, 100, 99, 53, 98, 57, 97, 48, 57, 48, 101, 49, 50, 49, 54, 62, 60, 98, 101, 55, 48, 97, 57, 52, 52, 57, 97, 102, 57, 50, 56, 55, 97, 54, 48, 100, 99, 53, 98, 57, 97, 48, 57, 48, 101, 49, 50, 49, 54, 62, 93, 47, 73, 110, 102, 111, 32, 55, 32, 48, 32, 82, 47, 83, 105, 122, 101, 32, 56, 62, 62, 10, 37, 105, 84, 101, 120, 116, 45, 53, 46, 53, 46, 53, 10, 115, 116, 97, 114, 116, 120, 114, 101, 102, 10, 49, 50, 55, 53, 10, 37, 37, 69, 79, 70, 10]

Answer 1

Try out below code:

 private void saveImage(String path, final byte[] bytes) throws IOException {
        final File file = new File(path);
        final FileOutputStream fileOut = new FileOutputStream(file );
        fileOut.write(bytes);
        fileOut.flush();
        fileOut.close();
    }

Answer 2

According to the documentation of ImageIO.read(InputStream input):

Returns a BufferedImage as the result of decoding a supplied InputStream with an ImageReader chosen automatically from among those currently registered. The InputStream is wrapped in an ImageInputStream. If no registered ImageReader claims to be able to read the resulting stream, null is returned.

My best guess is that the byte array you're retrieving from the table is not from a (valid) image.