java面向对象须知的一些基本概念
2013-03-27 00:00
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Real-world objects contain state and behavior.
A software object's state is stored in fields.
A software object's behavior is exposed through methods.
Hiding internal data from the outside world, and accessing it only through publicly exposed methods is known as data encapsulation.
A blueprint for a software object is called a class.
Common behavior can be defined in a superclass and inherited into a subclass using the extends keyword.
A collection of methods with no implementation is called an interface.
A namespace that organizes classes and interfaces by functionality is called a package.
The term API stands for Application Programming Interface.
A software object's state is stored in fields.
A software object's behavior is exposed through methods.
Hiding internal data from the outside world, and accessing it only through publicly exposed methods is known as data encapsulation.
A blueprint for a software object is called a class.
Common behavior can be defined in a superclass and inherited into a subclass using the extends keyword.
A collection of methods with no implementation is called an interface.
A namespace that organizes classes and interfaces by functionality is called a package.
The term API stands for Application Programming Interface.
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