Java/Android UUID (GUID) to bytes in a Windows compatible way

UUIDUtil.java

package com.example;

import java.util.UUID;

class UUIDUtil
{
    static private final int []s_Shuffle = {32, 40, 48, 56, 16, 24, 0, 8};
    
    public static void UUIDToBytes(UUID g, byte[]b, int offset)
    {
        int i;
        long hi = g.getMostSignificantBits(), lo = g.getLeastSignificantBits();
        for(i=0;i<8;i++)
        {
            b[offset + i] = (byte) (hi >> s_Shuffle[i]);
            b[offset + 8 + i] = (byte) (lo >> (56 - 8*i));
        }
    }

    public static byte[] UUIDToBytes(UUID g)
    {
        byte []b = new byte[16];
        UUIDToBytes(g, b, 0);
        return b;
    }
    
    public static UUID bytesToUUID(byte []b, int offset)
    {
        int i;
        long hi = 0, lo = 0;
        for(i=0;i<8;i++)
        {
            hi |= (((long)b[offset + i]) & 0xff) << s_Shuffle[i];
            lo |= (((long)b[offset + 8 + i]) & 0xff) << (56 - 8*i);
        }
        return new UUID(hi, lo);
    }    
    
    public static UUID bytesToUUID(byte []b)
    {
        return bytesToUUID(b, 0);
    }
}
    

Companion gist to this blog post.