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- An object that contains other objects, or more specifically, one of the objects in the Java library, like
ArrayList, that contains objects.
- The ability to define a new class that has the same instance variables and methods of an existing class.
- A class that inherits from, or extends, an existing class.
- An existing class that is extended by another class.
- wrapper method:
- A method that calls another method without doing much additional work.
- bottom-up development:
- A way of developing programs by identifying simple pieces, implementing them, and then assembling them into more complex algorithms.
- A relationship between two classes where one class “has” an instance of another class as one of its attributes.
- A relationship between two classes where one class extends another class; the subclass “is” an instance of the superclass.