how to make a calculator in java
// this was all coded by me, to use it get Eclipse, or IntelliJ and make a new // Java Project package javaCode; import java.util.Scanner; public class testCode { public static void main(String[] args) { Scanner scan = new Scanner(System.in); System.out.println("Would you like to Add, Subtract, Divide, or Multiply?"); String mathType = scan.next(); if (mathType.equalsIgnoreCase("add")) { System.out.println("Whats the first number you want to add?"); int firstNumber = scan.nextInt(); System.out.println(firstNumber + " + "); System.out.println("Enter your second number"); int secondNumber = scan.nextInt(); System.out.println(firstNumber + " + " + secondNumber + " ="); System.out.println(firstNumber + secondNumber); } else if (mathType.equalsIgnoreCase("subtract")) { System.out.println("Whats the first number you want to subtract?"); int firstNumber = scan.nextInt(); System.out.println(firstNumber + " - "); System.out.println("Enter your second number"); int secondNumber = scan.nextInt(); System.out.println(firstNumber + " - " + secondNumber + " ="); System.out.println(firstNumber - secondNumber); } else if (mathType.equalsIgnoreCase("divide")) { System.out.println("Whats the first number you want to divide?"); int firstNumber = scan.nextInt(); System.out.println(firstNumber + " % "); System.out.println("Enter your second number"); int secondNumber = scan.nextInt(); System.out.println(firstNumber + " % " + secondNumber + " ="); System.out.println(firstNumber / secondNumber); } else if (mathType.equalsIgnoreCase("multiply")){ System.out.println("Whats the first number you want to multiply?"); int firstNumber = scan.nextInt(); System.out.println(firstNumber + " x "); System.out.println("Enter your second number"); int secondNumber = scan.nextInt(); System.out.println(firstNumber + " x " + secondNumber + " ="); System.out.println(firstNumber * secondNumber); } } }