Java uses object-oriented development and java object-oriented development

Java uses object-oriented development and java object-oriented development

Objects are actually some things
Program comes from life
Purpose of the software:
Describe the real world in Computer Language
Solving real-world problems with computers
Benefits of object-oriented design and development programs:
Smoother communication
Improve Design and development efficiency

Abstract The following three steps from reality:
1. Find out its type
Abstract The specific "class" based on the features of "object"
2. Find out her attributes (static features (variables ))
3. Find out its behavior (dynamic, (method ))

Abstract principles:
Extract multiple objects as a class

Class diagram:
"+": Public
"-": Private

Benefits:
Clear, intuitive, and convenient for Program Development and Design