Calculator.java

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Calculator {
    public static void main(String[] args) {


        double answer, num1, num2;
        String input = Utils.getInput("Type in Equation");  // type ANY oporation
        Pattern p = Pattern.compile("\\d+");                     // \\d+ allows you to add first digit plus any others
        Pattern z = Pattern.compile("\\p{Punct}");
        Matcher l = z.matcher(input);
        Matcher m = p.matcher(input);
        String bucket = "";
        String oporator = "";
        while (l.find()) {
            oporator = l.group();
        }
        while (m.find()) {
            bucket += " " + m.group();
        }

        bucket = bucket.trim();

        String[] buckets = bucket.split(" ");
        double[] numbuck = new double[buckets.length];
        for (int i = 0; i < buckets.length; i++) {
            numbuck[i] = Double.parseDouble(buckets[i]);

        }

        num1 = numbuck[0];
        num2 = numbuck[1];

        switch (oporator) {
            case "+":
                answer = num1 + num2;
                System.out.println(answer);
                break;
            case "-":
                answer = num1 - num2;
                System.out.println(answer);
                break;
            case "*":
                answer = num1 * num2;
                System.out.println(answer);
                break;
            case "/":
                answer = num1 / num2;
                System.out.println(answer);
                break;
            default:
                System.out.println("Sorry, try again.");
                break;
        }
    }
}