How to fill an array with random numbers in Java?

May 3, 2021

To fill an array with random numbers in Java do this: new Random().ints().limit(10).toArray().

For example, here is how you can generate an array of 10 random integers:

import java.util.Random;

int[] tenRandomIntegers = new Random().ints().limit(10).toArray();

And here is how you can generate an array of 5 random fractional numbers:

import java.util.Random;

double[] tenRandomFractionalNumbers = new Random().ints().asDoubleStream().limit(5).toArray();