PRIME NUMBER CHECKER USING EXCEPTION IN JAVA

A simple program to check if the given number by a user is prime number or not that have exception handling capabilities.

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Sample Program Output

Program Listing

PrimeNumber.java

package exceptiondemo;

import java.util.Scanner;

import java.util.InputMismatchException;

/**

 * NetBeans IDE 8.2

 * @author Mr. Jake R. Pomperada

 * March 20, 2018  Tuesday

 * Bacolod City, Negros Occidental

 */

public class PrimeNumber {

   public static void main(String[] args) {

        

        Scanner sc=new Scanner(System.in);

               boolean flag = false;

               boolean goodData = false;

                

              while(!goodData) {

              try {

                System.out.print("PRIME NUMBER CHECKER USING EXCEPTION");

                System.out.println("\n");

                System.out.print("Give a number  : ");

int num_value =sc.nextInt();

                

                 for(int i = 2; i <= num_value/2; ++i)

        {

            // condition for nonprime number

            if(num_value % i == 0)

            {

                flag = true;

                break;

            }

        }

        if (!flag) {

            System.out.println("\n");

            System.out.println("The given " + num_value

                    + " is a Prime Number.");

        }

        else{

            System.out.println("\n");

            System.out.println("The given " + num_value

                    + " is Not a Prime Number.");

        }   

                

                System.out.println("\n");

goodData = true;

       

              } catch(InputMismatchException e) {

            

                sc.next();

                System.out.println("You Entered a Bad Data." );

                System.out.println("Please Try Again." );

                System.out.println("\n");

                }

            }  // while loop end

System.out.print("\t END OF PROGRAM");

        System.out.println("\n");

     }

}