Program Operasi Dasar Aritmatika 2 Bilangan dengan Java

Aritmatika

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

/**
 * @Developer    : Erik Gunawan
 * @Nickname     : EXz
 * @Phone        : 0896 5332 0577
 * @EMail        : admin@erikgunawan.com
 * @Gmail        : erik.gunawan44@gmail.com
 * @Website      : www.erikgunawan.com
 * @Facebook     : facebook.com/revolutionist.exz
 * @Twitter      : twitter.com/_EXz
 */

public class Aritmatika {
    
    private static BufferedReader br = null;
    
    public static void main(String[] args) {
        System.out.println("Program Aritmatika"); 
        System.out.println("==================");
        System.out.println();
        
        boolean cek = true;
        while (cek) {
            br = new BufferedReader(new InputStreamReader(System.in));
            try {
                System.out.print("Masukkan bilangan pertama: ");
                int bil1 = Integer.parseInt(br.readLine());

                System.out.print("Masukkan bilangan kedua: ");
                int bil2 = Integer.parseInt(br.readLine());

                System.out.println();

                int penjumlahan = bil1 + bil2;
                int pengurangan = bil1 - bil2;
                int perkalian = bil1 * bil2;
                double pembagian = (double)bil1 / (double)bil2;

                System.out.println("Hasil penjumlahan : " + bil1 + " + " + bil2 + " = "  + penjumlahan);
                System.out.println("Hasil pengurangan : " + bil1 + " - " + bil2 + " = "  + pengurangan);
                System.out.println("Hasil perkalian   : " + bil1 + " * " + bil2 + " = "  + perkalian);
                System.out.println("Hasil pembagian   : " + bil1 + " / " + bil2 + " = "  + pembagian);
                System.out.println();

                System.out.print("Ingin coba lagi (Y/N) ? ");

                String coba = br.readLine();
                if (coba.equalsIgnoreCase("N"))
                    cek = false;
                else if (coba.equalsIgnoreCase("Y"))
                    cek = true;
                else
                    System.exit(0);
            }
            catch (IOException ioe) {
                System.out.println("Error IOException");
            }
        }
    }
}