Coding Java "Bilangan Prima"

 Selamat mencoba guys :)


import javax.swing.*;

public class BilanganPrima {      

public static void main(String[] args) {   

int angka,pembagi,bil=2,counter=1;   

boolean Prima;   

String input;



     JOptionPane.showMessageDialog(null,"       Program Identifikasi Bilangan Prima","Welcome",JOptionPane.PLAIN_MESSAGE);

      input=JOptionPane.showInputDialog("Masukkan ...angka :");     angka=Integer.parseInt(input);          



while(counter<=1000){          

Prima=true;              



for (pembagi = 2; pembagi <= bil/2; pembagi++){           

 if (bil % pembagi == 0){            

  Prima = false;             

break;             

}       

  }

               if(Prima){

             if(angka==bil){

                JOptionPane.showMessageDialog(null,"Bilangan Prima","Hasil",JOptionPane.INFORMATION_MESSAGE);                                           System.exit(0);

                         }

             counter++;

          }

        bil++;

        }

         JOptionPane.showMessageDialog(null,"Bukan Bilangan Prima","Hasil",JOptionPane.ERROR_MESSAGE);

                               System.exit(0);

}}

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