How can I generate random integers in java?

Question

How can I generate random integers and then print them?

I have tried the following code,but it does not compile.

 import java.util.Random; class Random { Random rand = new Random(); int num=rand.nextInt(40); System.out.println(num); }

put your code in a main method, and give it another name or prefix the classnames. — jlordo
– jlordo, Commented Nov 28, 2012 at 13:52

lynks · Accepted Answer · 2012-11-28 13:53:57Z

You should use unique class names unless you feel like referring to the different Randoms by their full package titles.

import java.util.Random; public class MyRandom { public static void main(String args[]) { Random rand = new Random(); int num = rand.nextInt(40); System.out.println(num); } }

Save the above as MyRandom.java, then do a;

javac MyRandom.java java MyRandom

Rahul Tripathi · Accepted Answer · 2012-11-28 13:56:46Z

You can try something like this:-

 Random randomGenerator = new Random(); for (int idx = 1; idx <= 10; ++idx){ int randomInt = randomGenerator.nextInt(100); log("Generated : " + randomInt); }

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