byte[] commandBuffer;
int cmdBytes;
.
.
.
commandBuffer[0] = (byte) ((cmdBytes >> 24) & 0x000000ff);
commandBuffer[1] = (byte) ((cmdBytes >> 16) & 0x000000ff);
commandBuffer[2] = (byte) ((cmdBytes >> 8 ) & 0x000000ff);
commandBuffer[3] = (byte) (cmdBytes & 0x000000ff);