Random in Groovy

In Groovy, you can use the Random class to generate random numbers. Here are a few examples to show how to use it:

1. To generate a random integer between 0 and a specified maximum value (inclusive), use the nextInt method:

import java.util.Random
def random = new Random()

def max = 10

def randomNumber = random.nextInt(max + 1)

println(randomNumber)

This will output a random integer between 0 and 10 (inclusive).

2. To generate a random double between 0 and 1 (exclusive), use the nextDouble method:

import java.util.Random
def random = new Random()

def randomNumber = random.nextDouble()

println(randomNumber)

This will output a random double between 0 and 1 (exclusive).

3. To generate a random boolean, use the nextBoolean method:

import java.util.Random
def random = new Random()

def randomBoolean = random.nextBoolean()

println(randomBoolean)

This will output either true or false randomly.

4. To generate a random long between 0 and a specified maximum value (inclusive), use the nextLong method:

import java.util.Random
def random = new Random()

def max = 1000000000

def randomNumber = random.nextLong(max + 1)

println(randomNumber)

This will output a random long between 0 and 1000000000 (inclusive).

Note: It's important to always create a new Random object to ensure true randomness in your generated numbers.