JOptionPane

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/**
 *
 * @author Lenovo e440 UC 01
 */
import javax.swing.JOptionPane;
public class coba {
    public static void main (String args []){
    
        System.out.print("Kalkulator");
        String Input=JOptionPane.showInputDialog("silahkan masukan angka");
        String Input1=JOptionPane.showInputDialog("silahkan masukan operan+,-,*,/");
        String Input2=JOptionPane.showInputDialog("silahkan masukan angka kedua");
       
        float a=Float.parseFloat(Input);
        float c=Float.parseFloat(Input2);
        float hasil=0;
        if(Input1.equals("+")){
            hasil=a+c;
           
        }
        else if (Input1.equals("-")){
            hasil=a-c;
        }
        else if (Input1.equals("*")){
            hasil=a*c;
        }
        else if (Input1.equals("/")){
            hasil=a/c;
        }
        System.out.print(a);
        System.out.print(Input1);
        System.out.print(c);
        System.out.println("hasil1");
        System.out.println(hasil);
   
   
       
       
       
        }