How do I generate random numbers in a certain range using the random class?

[frasifrasi]

I know how to use Math.random for this, but how would I generate random numbers using the random class?

Say I want a number between 40 and 50, inclusive--how would I do this?

What i have in mind is:

int randomNumber = random.nextInt(max) + min;

where max is 50 and min is 40. Is this correct?

Thank you.

[Fubarable]

Random numbers always go from 0 to the max. And you know that you want to start with 40 and add a random number to it. So how do you do this? Think on this and you will figure this out.

[frasifrasi]

I have searched it for the past 30 min and did not find an exact method for int. Can anyone help me out here? I need this before proceeding with my program.

[sukatoa]

use else/if statement to filter the undesired generated integer number....

[hardwired]

Code:

import java.util.Random;

public class Test {
    public static void main(String[] args) {
        Random seed = new Random();
        // range [40 - 50]
        int base = 40;
        int variable = 10;
        int min =  Integer.MAX_VALUE;
        int max = -Integer.MAX_VALUE;
        for(int i = 0; i < 100; i++) {
            // 0 <= range returned < specified value
            int next = 40 + seed.nextInt(variable + 1);
            if(next < min) min = next;
            if(next > max) max = next;
        }
        System.out.printf("min = %d  max = %d%n", min, max);
    }
}

[Fubarable]

Quote:

Originally Posted by frasifrasi

I have searched it for the past 30 min and did not find an exact method for int. Can anyone help me out here? I need this before proceeding with my program.

You don't need an "exact method". We've given you enough hints, now all you need is a functioning brain.

[frasifrasi]

Ok, thanks. I searched extensively and didn't come across anything.

[Zosden]

rand(max - min) + min.