What am I doing Wrong in the following code?

Question

import java.util.Scanner;
public class Program
{
public static void main(String[] args) {
//variables
int firstNumber, secondNumber;
String operation, a;
//user input
Scanner sc = new Scanner(System.in);

System.out.println("Enter the first integer");
firstNumber = sc.nextInt();

System.out.println("Enter the operation in words(add, substract, multiply, devide):");
a = sc.nextLine();
operation = a.toLowerCase();

System.out.println("Enter the second integer");
secondNumber = sc.nextInt();

System.out.println(firstNumber);
System.out.println(secondNumber);
System.out.println(operation );
}
}

Answer 1

https://www.sololearn.com/post/75089/?ref=app

Answer 2

👆Take a look at above post...

And
Input in the form:
int String
int
Ex:
4 string
5

Answer 3

After firstNumber = sc.nextInt();
You have to add "sc.nextLine();" - it will consume "\n" - new line