Get four circle quadrant

CircleQuadrant.java

    static HashMap<String, String> QUADRANTS = new HashMap<String, String>(){{
        put("1,1", "Q1");
        put("-1,1", "Q2");
        put("-1,-1", "Q3");
        put("1,-1", "Q4");
    }};

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        System.out.println("Enter the number of x: ");
        double x = scanner.nextDouble();
        System.out.println("Enter the number of y: ");
        double y = scanner.nextDouble();

        int cartesianX = getCartesianIdentifier(x);
        int cartesianY = getCartesianIdentifier(y);

        String ordered = cartesianX + "," + cartesianY;
        String value = QUADRANTS.getOrDefault(ordered, "Index");

        System.out.println(value);
    }

    public static int getCartesianIdentifier(double number) {
        return number > 0 ? 1 : number < 0 ? -1 : 0;
    }