Java Algorithms How to - Generate Random numbers in a range

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Question

We would like to know how to generate Random numbers in a range.

Answer

import java.util.Random;
// ww w.j a  v a2s.c  o m
public class Main {
  public static void main(String[] args) {
    int randomNumberBetween1To100 = getRandom(0, 100);
    System.out.println("Random number between 1 to 100 is: "
        + randomNumberBetween1To100);
  }

  public static int getRandom(int minNumber, int maxNumber) {
    Random rand = new Random();
    int randomNum = rand.nextInt(maxNumber - minNumber);
    return randomNum;
  }
}

The code above generates the following result.

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