@Override
    public void display(UserInterface ui) {
        if (breakpoints.isEmpty()) {
            UserInterface.println("There are no breakpoints currently set.\n");
        } else {
            UserInterface.print("Breakpoints are currently set on lines: ");
            for (String breakpoint : breakpoints) {
                UserInterface.print(breakpoint + " ");
            }
            UserInterface.println("\n");
        }
    }