Java Utililty Methods Random Long

Random generateRandomBySampleSeed(long sampleSeed, long fallbackValue)
Generate random instance according to sample seed.

if (sampleSeed != fallbackValue) {
 return new Random(sampleSeed);
return new Random();

long generateRandomLongValue()
generate Random Long Value

long randomID = generateRandomLongValue(MIN_SEED, Long.MAX_VALUE);
return randomID;

long getLong()
Get next random long value.

return random.nextLong();

long getLong()
Gets a random long.

return RANDOM.nextLong();

long getLongBetween(long n, long m)
get Long Between

if (m <= n) {
 return n;
long res = getLongMoreThanZero();
return n + res % (m - n);

long getLongInRange(long minValue, long maxValue)
It returns a long/Long value between min and max value (included).

return (long) (getDoubleInRange(minValue - 0.5, maxValue + 0.5 - (1 / Long.MAX_VALUE)) + 0.5);

long getLongSpecial()
get Long Special

int i = rng.nextInt();
long j = rng.nextLong();
if ((i & 0x10) != 0)
 return j;
return lspecial[((int) j & 0x7fffffff) % special.length] * ((i & 0x20) == 0 ? 1 : -1) + ((i & 0x03) - 1);

long[] getLongSpecialCases()
Testing helper method.

long longs[] = new long[100];
int i = 0;
longs[i++] = Long.MAX_VALUE;
longs[i++] = Long.MAX_VALUE - 1L;
longs[i++] = (long) Integer.MAX_VALUE + 1L;
longs[i++] = Integer.MAX_VALUE;
longs[i++] = Integer.MAX_VALUE - 1;
longs[i++] = 100L;
...

long getRandomLong()
Generates next random long

Random rand = new Random(System.currentTimeMillis());
return rand.nextLong();

double nextLong()
next Long

return random.nextDouble();