Generating a random integer in a range [duplicate]

Question

This question already has answers here:

How do I generate random integers within a specific range in Java? (72 answers)

Closed 9 years ago.

Trying to random an integer between 15-20, inclusive.

Am I implementing this code correctly?

    Random radiusChooser = new Random();
    radius = radiusChooser.nextInt(21)-6;

Answer 1

Try this instead:

radius = radiusChooser.nextInt(6) + 15;

This will choose a random number between 0 and 5 (inclusive) and then add 15 to it - which gives you a random number between 15 and 20 (inclusive).