produces an array of a certain length of integers in java

rangearrayfunction.java

import java.util.Arrays;

class Main {
  public static void main(String[] args) {
    System.out.println(Arrays.toString(range(4)));
  }
  static int[] range(int x) {
    int [] range = new int[x];
    int num = 0;
    while (num < x) {
        range[num] = num;
        num++;
    }
    return range;
  }
}