# Calculator Using Switch Statement in Java Machine Problem

Write a Java program that will use the MDAS Operation to  * calculate integers. “Use switch Statement” using Java programming language.

Sample Program Output

Operator (+,-,*,/)

Choose Operator : +

Enter First Number: 10

Enter Second Number: 1

10 + 1 = 11

Operator (+,-,*,/)

Choose Operator : –

Enter First Number: 10

Enter Second Number: 1

10 – 1 = 9

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Program Listing

``````package test;

import java.util.Scanner;

/*
* Calculator.java
*
* Jake Rodriguez Pomperada, MAED-IT, MIT
* Bacolod City, Negros Occidental Philippines
*
* Machine Problem
*
* Write a Java program that will use the MDAS Operation to
* calculate integers. "Use switch Statement"
*
* Sample Program Output
*
* Operator (+,-,*,/)
* Choose Operator : +
* Enter First Number: 10
* Enter Second Number: 1
* 10 + 1 = 11
*
* Operator (+,-,*,/)
* Choose Operator : -
* Enter First Number: 10
* Enter Second Number: 1
* 10 - 1 = 9
*/

public class Calculator {

public static void main(String[] args) {

char operator;
int number1, number2, result;

// create an object of Scanner class
Scanner input = new Scanner(System.in);

// ask users to enter operator
System.out.println();
System.out.println("+,=,*,/");
System.out.print("Choose Operator : ");
operator = input.next().charAt(0);

// ask users to enter numbers
System.out.print("Enter First Number : ");
number1 = input.nextInt();

System.out.print("Enter Second Number : ");
number2 = input.nextInt();

switch (operator) {

case '+':
result = number1 + number2;
System.out.println(number1 + " + " + number2 + " = " + result);
break;

// performs subtraction between numbers
case '-':
result = number1 - number2;
System.out.println(number1 + " - " + number2 + " = " + result);
break;

// performs multiplication between numbers
case '*':
result = number1 * number2;
System.out.println(number1 + " * " + number2 + " = " + result);
break;

// performs division between numbers
case '/':
result = number1 / number2;
System.out.println(number1 + " / " + number2 + " = " + result);
break;

default:
System.out.println("Invalid operator!");
break;
}

input.close();
}
}

``````