Java Security

Please help me to solve my problem here. I want to know how to encode and decode a message in wbmp image format? i have tried using steganography method but it is not work. when i succesfully hide the message in the wbmp format,the image(wbmp) is not like where it is used to be.the image was destroyed because i was using LSB (least significant bit) technique and the wbmp image is only a 1 bit image.
plss solve my problem.i need it as soon as possible.
plss give me a sample code how to encript and decript message in wbmp image format.

thank you
eizzy