A conceptual group announces features one such as for instance approach you to definitely try declared abstract and that is used because of the subclasses. An abstract group might have such as tips one use a standard behavior. A software could only state constants and you will including actions, however, you should never incorporate default choices.
What's the function of garbage collection for the Coffee, and in case is it put? The reason for trash range is always to pick and you can dispose of stuff which can be not any longer required because of the an application to ensure that their resources would be reclaimed and you will used again.