IT Progamming

• ..

package switchcase;

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

/**
 *
 * @author fian
 */
public class SwitchCase {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws Exception {
        int x, y;
        //untuk menangkap inputan dari keyboard
        BufferedReader object = new BufferedReader(new InputStreamReader(System.in));
        System.out.println("Enter two numbers for operation:");
        try {
            x = Integer.parseInt(object.readLine()); //membaca inputan dari keyboard
            y = Integer.parseInt(object.readLine());
            System.out.println("1. Add");
            System.out.println("2. Subtract");
            System.out.println("3. Multiply");
            System.out.println("4. Divide");
            System.out.println("enter your choice:");
            int a = Integer.parseInt(object.readLine()); //parsing inputan ke type integer
            switch (a) {
                case 1: //jika pilahan 1
                    System.out.println("Enter the number one=" + (x + y));
                    break;
                case 2: //jika pilihan 2
                    System.out.println("Enter the number two=" + (x - y));
                    break;
                case 3: //jika pilihan 3
                    System.out.println("Enetr the number three=" + (x * y));
                    break;
                case 4: //jika pilihan 4
                    System.out.println("Enter the number four=" + (x / y));
                    break;
                default: //selain di atas
                    System.out.println("Invalid Entry!");
            }
        }
        //penanganan jika ada kesalahan pada execution di atas
        catch (NumberFormatException ne) {
            //menampilkan pesan kesalahan
            System.out.println(ne.getMessage() + " is not a numeric value.");
            System.exit(0); //keluar
        }
    }
}