import java.util.Random;

public class RandomSample {

    public static void main(String[] args) {
        System.out.println(randomInt1());
        System.out.println(randomInt2());
    }

    public static Integer randomInt1() {
        int min=30, max=100;
        return new Random().nextInt(max - min) + min;
    }

    public static Integer randomInt2() {
        int min=30, max=100;
        return (int)(Math.random() * (max - min)) + min;
    }
}