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Twin Prime Numbers in Java

Twin Prime Numbers :


The difference between two prime numbers are 2 those Prime numbers called as Twin Prime Prime Numbers

package my.TwinPrime;

import java.util.Scanner;

public class TwinPrime {
      
         public static int primechecker(int n) {
               int f = 0;
        
               for (int i = 2; i <= n / 2; i++) {
                   if (n % i == 0) {
                       f = 1;
                       break;
                   }
               }
        
               return f;
           }
        
           // main method begins execution of this class
           public static void main(String args[]) {
        
               int num1, num2;
        
               Scanner sc = new Scanner(System.in);
               System.out.print("Enter first number: ");
               // Waiting for the user input
               num1 = sc.nextInt();
        
               System.out.print("Enter second number: ");
               // Waiting for the user input
               num2 = sc.nextInt();
        
               // if both are prime and difference between them is 2
               if (primechecker(num1) == 0 && primechecker(num2) == 0 && Math.abs(num2 - num1) == 2) {
                   System.out.println("The numbers are twin prime numbers");
               } else {
                   System.out.println("The numbers are not twin prime numbers");
               }
        
           }


                          
              }
             
      
      

              

OUTPUT:
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