[Java] Any class or method returning a random number?

Question

What class to import? What's the method and its usage?

Answer 1

import java.util.Random;

public class RandomNumber {
    public static void main(String[] args) {

        Random generator = new Random();
        int number = generator.nextInt();
        System.out.println(number);

    }

}

Answer 2

Example, if you want a number between 0 and 9.

import java.util.Random;

public class Random {
   public static void main(String[] args) {

        Random generator = new Random();
        int number = generator.nextInt(10);
        System.out.println(number);

   }
}