Natural Binary Code to Gray Code and Gray Code to Binary

GrayUtils.java

public class GrayUtils {

public static int binaryToGray(int binary) {
        return (binary ^ (binary >>> 1));
    }

    public static int grayToBinary(int gray) {
        int binary = 0;
        int i = Integer.parseUnsignedInt("80000000", 16);

        i >>>= Integer.numberOfLeadingZeros(gray);
        binary = i;

        for(; i > 0; i>>=1) {
            binary |= (gray & i) ^ ((binary & (i << 1)) >>> 1);
        }

        return binary;
    }
}