Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: LGPL 

import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.util.UUID;

public class Main {
    public static final String BASE_UUID_START = "0000";
    public static final String BASE_UUID_END = "-0000-1000-8000-00805f9b34fb";

    public static byte[] uuidToBytes(String uuidStr) {
        UUID uuid = stringToUuid(uuidStr);

        ByteBuffer bb = ByteBuffer.allocate(16);
        bb.order(ByteOrder.LITTLE_ENDIAN);
        bb.putLong(uuid.getLeastSignificantBits());
        bb.putLong(uuid.getMostSignificantBits());
        return bb.array();
    }

    public static UUID[] stringToUuid(String[] uuids) {
        UUID[] result = new UUID[uuids.length];

        for (int i = 0; i < uuids.length; ++i) {
            result[i] = stringToUuid(uuids[i]);
        }
        return result;
    }

    public static UUID stringToUuid(String uuidStr) {
        if (uuidStr.length() == 4) {
            uuidStr = BASE_UUID_START + uuidStr + BASE_UUID_END;
        }
        return UUID.fromString(uuidStr);
    }
}