Prime Number Generator Logic

Question

I am supposed to make a class PrimeNumberGenerator which has a method nextPrime that will print out all prime numbers up to a number the user input

Answer 1

Here is my Soluction.

public class PrimeNumberGenerator {

public static void print(int n) {
    // since 1 is not prime number.
    for (int i = 2; i <= n; i++) {
        if (isPrime(i)) {
            System.out.print(i + "\n");
        }
    }

}

public static boolean isPrime(int num) {

    for (int i = 2; i * i <= num; i++) {
        if (num % i == 0) {
            return false;
        }
    }

    return true;
}

public static void main(String[] args) {
    print(10);
  }

}

Output: 2 3 5 7