bilangan prima

import java.util.Scanner;

public class Prima {

    public static void main(String[] args) {
        // TODO Auto-generated method stub

        System.out.println("Masukkan angka");
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();


        for (int i = 1; i <= n; i++) {
            Boolean prima = isPrime(i);

            if(prima) {
                System.out.print(i+" ");
            }
        }


    }

     static boolean isPrime(int n) {

         int jumlah = 0;

         for(int i = 1; i <= n; i++) {

             if(n%i == 0){
                 jumlah++;
             }
         }

        if(jumlah == 2 ) {
             return true;
         }else {
             return false;
         }

    }

}