Java Utililty Methods ThreadLocalRandom

List of utility methods to do ThreadLocalRandom

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Description

The list of methods to do ThreadLocalRandom are organized into topic(s).

Method

intrandomInteger(int min, int max)
Generates and returns a pseudorandom integer value between min and max (inclusive). 
return ThreadLocalRandom.current().nextInt(min, max + 1);
ListrandomIntegerList(int min, int max, int minLength, int maxLength)
Returns a list of randomly generated integers using the minimum and maximum data point values and the minimum and maximum lengths. 
try {
    if (min >= max || minLength >= maxLength) {
        throw new IndexOutOfBoundsException("Index out of bounds generating random integer list.");
    List<Integer> list = new ArrayList<Integer>();
    int length = ThreadLocalRandom.current().nextInt(minLength, maxLength + 1);
    for (int i = 0; i < length; i++) {
        list.add(ThreadLocalRandom.current().nextInt(min, max + 1));
...
long[]randomLongs(final long count, final long min, final long max)
random Longs 
final Random rand = ThreadLocalRandom.current();
final long[] randomNum = rand.longs(count, min, max + 1).toArray();
return randomNum;
long[]randomLongsNonDuplicates(final long count, final long min, final long max)
random Longs Non Duplicates 
ThreadLocalRandom rng = ThreadLocalRandom.current();
Set<Long> generated = new LinkedHashSet<>();
while (generated.size() < count) {
    Long next = randLong(rng, min, max);
    generated.add(next);
return generated.stream().mapToLong(i -> i).toArray();
intrandomNum(int min, int max)
random Num 
if (min < 0) {
    int i = nextInt(max + 1 + Math.abs(min));
    return min + i;
} else {
    int i = nextInt(max + 1 - min);
    return min + i;
ListrandomNums(int min, int max, int count)
random Nums 
if (max - min + 1 > count) {
    count = max - min + 1;
Set<Integer> nums = new LinkedHashSet<Integer>();
while (nums.size() < count) {
    nums.add(randomNum(min, max));
List<Integer> list = new ArrayList<Integer>(nums);
...
booleanrandomPer(long num, long divisor)
random Per 
return ThreadLocalRandom.current().nextLong(0, divisor) < num;
floatrandomReal(float range)
random Real 
ThreadLocalRandom rand = ThreadLocalRandom.current();
return (rand.nextFloat() - rand.nextFloat()) * range;
intrandomSeed()
random Seed 
ThreadLocalRandom rnd = ThreadLocalRandom.current();
int seed;
do {
    seed = rnd.nextInt();
} while (seed == 0);
return seed;
StringrandomString()
random String 
return UUID.randomUUID().toString();