Java Utililty Methods ThreadLocalRandom

String base62Random()
base Random

return base62ToString(Math.abs(ThreadLocalRandom.current().nextLong()));

int createNewPin()
create New Pin

int randomNum = ThreadLocalRandom.current().nextInt(1, 10000);
return randomNum;

String createRandom(int number)
create Random

long min = (long) Math.pow(10, number - 1) + 1;
long max = (long) Math.pow(10, number) - 1;
long result = (long) ThreadLocalRandom.current().nextDouble(min, max);
return result + "";

String createRandomName()
create Random Name

return ("uniqueDb" + UUID.randomUUID() + ThreadLocalRandom.current().nextLong()).replaceAll("-", "")
 .toLowerCase();

String createRandomNumbers(int length)
create Random Numbers

String numbers = "";
for (int i = 0; i < length; ++i) {
 int randomNumber = ThreadLocalRandom.current().nextInt(0, 9);
 numbers += Integer.toString(randomNumber);
return numbers;

String generateDescription()
Generates a description for a random part using the arrays of constants #SIZE , #COLOUR , #SHAPE , #MATERIAL , and #NOUN .

ThreadLocalRandom r = ThreadLocalRandom.current();
StringBuilder sb = new StringBuilder(40);
sb.append(SIZE[r.nextInt(SIZE.length)]);
sb.append(' ');
sb.append(COLOUR[r.nextInt(COLOUR.length)]);
sb.append(' ');
sb.append(SHAPE[r.nextInt(SHAPE.length)]);
sb.append(' ');
...

double[] generateRandomDoubleVector(int dimension, double bottomLimit, double topLimit)
generate Random Double Vector

double[] position = new double[dimension];
for (int i = 0; i < dimension; i++) {
 position[i] = ThreadLocalRandom.current().nextDouble(bottomLimit, topLimit);
return position;

int generateRandomisedId()
Generate a randomized integer over [ Integer#MIN_VALUE , Integer#MAX_VALUE ] suitable for use as an Aeron Id.

return ThreadLocalRandom.current().nextInt();

byte[] generateRandomSalt(int saltSize)
generate Random Salt

byte[] randomSalt = new byte[saltSize];
ThreadLocalRandom.current().nextBytes(randomSalt);
return randomSalt;

String generateString(int length)
generate String

StringBuffer sb = new StringBuffer();
for (int i = 0; i < length; i++) {
 int index = ThreadLocalRandom.current().nextInt(allChar.length());
 sb.append(allChar.charAt(index));
return sb.toString();