EastRepo/PrimeNumber.java at master · coderclub/EastRepo · GitHub

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package ClassPractice1;

import java.util.Scanner;
public class PrimeNumber {
    public static void main(String[] args) {
        /*int num = 6;
        boolean flag = false;
        for (int i = 2; i <= num/2; i++){
            if(num % i == 0){
                flag = true;
                break;
            }
        }

        if (!flag)
            System.out.println(num + " is a prime number");
        else
            System.out.println(num + " is not a prime number");*/
        int temp;
        boolean isPrime=true;
        Scanner scan= new Scanner(System.in);
        System.out.println("Enter any number:");
        //capture the input in an integer
        int num=scan.nextInt();
        scan.close();
        for(int i=2;i<=num/2;i++)
        {
            temp=num%i;
            if(temp==0)
            {
                isPrime=false;
                break;
            }
        }
        //If isPrime is true then the number is prime else not
        if(isPrime)
            System.out.println(num + " is a Prime Number");
        else
            System.out.println(num + " is not a Prime Number");

    }

}