Explain what a class, an object, a field and a method are to a beginner.
Answer
- A class is a blueprint (for example
Bicycle): it describes what every bicycle has and can do. - An object is one real thing created from that blueprint (
Bicycle bike1 = new Bicycle();). Two objects from the same class keep their own data. - Fields store the state of the object:
speed, gear. - Methods are its behavior, the actions it can perform:
speedUp(), applyBrakes(). - Encapsulation: keep the fields private and let others use the object only through its methods.
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