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Java

Math Calculator in Java

A simple math calculator program that I wrote in Java programming language.

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Program Listing

Math_Calculator.java

import java.util.*;

public class Math_Calculator {
    public static void main(String[] args){
    Scanner Input = new Scanner(System.in);
    System.out.println("Enter Number");
    System.out.println("1 - Addition");
    System.out.println("2 - Subtraction");
    System.out.println("3 - Division");
    System.out.println("4 - Multiplication");
    
    int choice = Input.nextInt();
    if(choice==1){
        System.out.println("Enter first number");
        double num1 = Input.nextDouble();
        System.out.println("Enter Second number");
        double num2 = Input.nextDouble();
        double sum = num1+num2;
        System.out.println("sum= " + sum);
        
        
        }
    else if(choice==2){
        System.out.println("Enter first number");
        double num1 = Input.nextDouble();
        System.out.println("Enter Second number");
        double num2 = Input.nextDouble();
        double difference = num1-num2;
        System.out.println("difference= " + difference);
        
       
        }
    else if(choice==3){
        System.out.println("Enter first number");
        double num1 = Input.nextDouble();
        System.out.println("Enter Second number");
        double num2 = Input.nextDouble();
        double qoutient = num1/num2;
        System.out.println("qoutient= " + qoutient);
        
        }
   else if(choice==4){
        System.out.println("Enter first number");
        double num1 = Input.nextDouble();
        System.out.println("Enter Second number");
        double num2 = Input.nextDouble();
        double product = num1*num2;
        System.out.println("product= " + product);
        }
       else{
            System.out.println("invalid");
       }
    }
}

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