i have a project that requires me to grab 2 bits of red and 2 bits of blue from the source image, and replace them with 4 bits each of blue of the watermark image in the first 2 blocks, 4 bits each of green in the next 2 blocks and 4 bits of red in the last 2 blocks. the source image pixels are divided into 6 blocks. can you please help me with this java code, since i am new to the subject. Thank you.