<java基础学习>JAVA 对象和类

Java is an Object-Oriented Language. As a language that has the Object Oriented feature, Java supports the following fundamental concepts:

• Polymorphism (多态性)
• Inheritance（继承）
• Encapsulation （封装）
• Abstraction （抽象）
• Classes （类）
• Objects （对象）
• Instance （实例）
• Method （方法）
• Message Parsing （消息解析）

In this chapter, we will look into the concepts Classes and Objects.

• Object - Objects have states(状态) and behaviors（行为）. Example: A dog has states - color, name, breed as well as behaviors -wagging, barking, eating. An object is an instance of a class.

• Class - A class can be defined as a template/blue print（蓝图） that describes（描述） the behaviors/states that object of its type support.

Objects in Java: