public static String UU32(java.util.UUID uu) {
        StringBuilder sb = new StringBuilder();
        long          m  = uu.getMostSignificantBits();
        long          l  = uu.getLeastSignificantBits();
        for (int i = 0; i < 13; i++) {
            sb.append(_UU32[(int) (m >> ((13 - i - 1) * 5)) & 31]);
        }
        for (int i = 0; i < 13; i++) {
            sb.append(_UU32[(int) (l >> ((13 - i - 1)) * 5) & 31]);
        }
        return sb.toString();
    }
@Test
    public void testUU32(){
        String uu32 = UUID.UU32();
        System.out.println(uu32);
    }