Let’s learn prime number program in java using scanner.

## Prime number program in java using scanner

Here’s java program.

import java.util.Scanner; public class PrimeNumberUsingScanner { public static void main(String[] args) { Scanner sc = new Scanner(System.in); System.out.println("Please enter a number to check prime number: "); int number = sc.nextInt(); if(checkPrimeNumber(number)) { System.out.println(number + " is a prime number"); } else { System.out.println(number + " is not a prime number"); } sc.close(); } public static boolean checkPrimeNumber(int number) { if(number <= 1) { return false; } for(int a = 2; a < Math.sqrt(number); a++) { if(number % a == 0) { return false; } } return true; } }

**Output:**

Please enter a number to check prime number: 15

15 is not a prime number

Please enter a number to check prime number: 19

19 is a prime number

Also read – interface in java