Question

This is a quick little assignment I have to do, but I missed alot of class due to the Hurricane and no one here knows what theyre doing. please help! this is Java with intelli-J

Overview In this project students will build a four-function one-run calculator on the command line. The program will first prompt the user for two numbers, then display a menu with five operations. It will allow the user to select an option by reading input using a scanner object. The program will then display the result of the operation and exit. The project is designed to give students an opportunity to practice input, output, selection, and basic operators via a simple project Specification When the program starts it should prompt the user to enter an operand and read a double precision floating point number as follows: Enter first operand: 89.1 Enter second operand: 42 Once the two operands have been read and stored, the program should display a menu as follows: Calculator Menu 1. Addition 2. Subtraction 3. Multiplication 4. Division ...and then display a menu and accept wer input (we recommend an integer type for the input): Which operation do you want to perform? 1 If a valid operation is selected, the program should print the result and exit: The result of the operation is 131.1. Goodbye! If the input is an invalid integer, it should print this error message and exit:

Answer 1

import java.util.Scanner;
class Main{

public static void main(String[] args){
Scanner scnr=new Scanner(System.in);
int option;
double op1,op2,result;
System.out.println("Etner first operand : ");
op1=scnr.nextDouble();
System.out.println("Enter second operand : ");
op2=scnr.nextDouble();
System.out.println("Calculator Menu");
System.out.println("--------------");
System.out.println("1.Addition \n2. Subtraction \n3.Multiplication\n4.Division");
System.out.println("Which operation do you want to perform ?");
option=scnr.nextInt();
switch(option)
{
case 1: result=op1+op2;
System.out.println("The result of the operation is "+result +". Goodbye!");
break;
case 2: result=op1-op2;
System.out.println("The result of the operation is "+result +". Goodbye!");
break;
case 3: result=op1*op2;
System.out.println("The result of the operation is "+result +". Goodbye!");
break;
case 4: result=op1/op2;
System.out.println("The result of the operation is "+result +". Goodbye!");
break;
default:System.out.println("Error : Invalid selection! Terminating program.");
  
}
}
}

in Etner first operand : 89.1 Enter second operand : Calculator Menu - - - - - - - - - - - - - - 1. Addition 2. Subtraction 3.Multiplication 4.Division Which operation do you want to perform ? The result of the operation is 131.1. Goodbye! ... Program finished with exit code o Press ENTER to exit console.