Using ints/doubles and Strings in the same Scanner variable
<p>So I'm new to java programming, coming from Python, and there's a few concepts that I can't quite understand. </p>

<p>I'm writing a program which allows the user to enter as many numbers as they want and the program should output the average of all of the numbers. I used a while loop to loop through the inputs by the user as many times as they wanted, but I needed a way of exiting the loop so that the program could proceed with calculating the average of all of the inputs. I decided that if the user enters an "=" sign instead of a number, then the program would break out of the loop, but since the Scanner variable was looking for a double, and the "=" sign is not a number, I would have to make it a String. But because the Scanner is looking for a double, the program threw an error when it encountered the "=". </p>

<p>How can I get the program to exit the loop when the user types "="? I know I could just allow the user to enter a number that breaks the loop, but if it was a real world program and the user entered a number, it would count that number along with the previous ones when calculating the average. The code I have so far is as follows:</p>

<pre><code>import java.util.Scanner;
// imports the Scanner class

public class Average{
    public static void main(String[] args){
        double num, total = 0, noOfInputs = 0, answer;
        Scanner scanner = new Scanner(System.in);

        while(true){
            System.out.print("Enter number: ");
            //Prompts the user to enter a number

            num = scanner.nextDouble();
            /*Adds the number inputted to the "num" variable. This is the
            source of my problem*/

            if(num.equals("=")){
                break;}
            /*The if statement breaks the loop if a certain character is
            entered*/

            total = total + num;
            //Adds the number inputted to the sum of all previous inputs

            noOfInputs++;
            /*This will be divided by the sum of all of the numbers because
              Number of inputs = Number of numbers*/
        }

        answer = total / noOfInputs;
        System.out.print(answer);

        }
}
</code></pre>