Prime.java

package prime;
 
import java.util.Scanner;
 
public class PrimeNumberProgram 
{
    static boolean checkForPrime(int inputNumber)
    {
        boolean isItPrime = true;
 
        if(inputNumber <= 1) 
        {
            isItPrime = false;
 
            return isItPrime;
        }
        else
        {
            for (int i = 2; i<= inputNumber/2; i++) 
            {
                if ((inputNumber % i) == 0)
                {
                    isItPrime = false;
 
                    break;
                }
            }
 
            return isItPrime;
        }
    }
 
    public static void main(String[] args) 
    {
        Scanner sc = new Scanner(System.in);
 
        System.out.println("Enter a number :");
 
        int inputNumber = sc.nextInt();
 
        boolean isItPrime = checkForPrime(inputNumber);
 
        if (isItPrime)
        {
            System.out.println(inputNumber+" is a prime number.");
        }
        else
        {
            System.out.println(inputNumber+" is not a prime number.");
        }
 
        sc.close();
    }
}