How to convert array of bytes into Image in Java SE

Question

What is the right way to convert raw array of bytes into Image in Java SE. array consist of bytes, where each three bytes represent one pixel, with each byte for correspondi

Answer 1

There is a setRGB variant which accepts an int array of RGBA values:

BufferedImage img=new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
int[] raw = new int[data.length * 4 / 3];
for (int i = 0; i < data.length / 3; i++) {
    raw[i] = 0xFF000000 | 
        ((data[3 * i + 0] & 0xFF) << 16) |
        ((data[3 * i + 1] & 0xFF) << 8) |
        ((data[3 * i + 2] & 0xFF));
}
img.setRGB(0, 0, width, height, raw, 0, width);

The performance characteristics is similar to CoderTao's solution.