Switch

 

package operadores;

import javax.swing.JOptionPane;

public class persona {

public static void main(String[] args) {

int a, b, s, r, m, d;

char c;

a = Integer.parseInt(JOptionPane.showInputDialog("Numero 1: "));

b = Integer.parseInt(JOptionPane.showInputDialog("Numero 2: "));

c = JOptionPane.showInputDialog("Operación: ").charAt(0);

switch (c) {

case '+' :

case 'S' :

s = a + b;

JOptionPane.showMessageDialog(null, "Suma es: " + s);

break;

case '-' :

case 'R' :

r = a - b;

JOptionPane.showMessageDialog(null, "Resta es: " + r);

break;

case '*' :

case 'M' :

m = a * b;

JOptionPane.showMessageDialog(null, "Multiplicación es: " + m);

break;

case '/' :

case 'D' :

d = a / b;

JOptionPane.showMessageDialog(null, "División es: " + d);

break;

default :

JOptionPane.showMessageDialog(null, "Error");

}

}

}