simple calculator making project in java.

package com.mahmud;

import jdk.dynalink.beans.StaticClass;

import java.util.Scanner;

public class Main {
   static int sum(int num4, int num5) {
        return num4+num5;
    }

    public static void main(String[] args) {


        float num1,num2;

        int []  sadat = {1,3,5,6,7,9};
        for (int value:sadat){
            System.out.print(value);

        }
        System.out.println(" Enter first number");
        Scanner scan = new Scanner(System.in);
        num1 = scan.nextFloat();

        System.out.println("Enter operator");
        Scanner scan2 = new Scanner(System.in);
                 String operator = scan.next();
        System.out.println("Enter second number");
        num2 = scan.nextFloat();

        switch (operator){
            case "+":
                System.out.print("adding two numbers: ");
                System.out.println(num1 +  operator + num2);
                System.out.println(num1+num2);
                break;

                case "-":
                System.out.print("subtracting  two numbers: ");
                System.out.println(num1 +  operator + num2);
                System.out.println(num1-num2);
                break;

                case "/":
                System.out.print("deviding two numbers: ");
                System.out.println(num1 +  operator + num2);
                System.out.println(num1/num2);
                break;

                case "*":
                System.out.print("multiplicating two numbers: ");
                System.out.println(num1 +  operator + num2);
                System.out.println(num1*num2);
                break;

            default:
                System.out.println("Invalid input");



        }



    }
}