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);
}
}
}