Object oriented programming idea

1、 Difference between object-oriented and process oriented:

Process oriented design:

Object oriented design:

2、 Object oriented in Java

Class and object are two very important concepts in the process of object-oriented programming. Class is the abstraction of a batch of objects and a concept. Object is a concrete entity, also known as instance.

object

class

The next study will focus on various aspects of classes and objects, involving knowledge loopholes. I hope you can correct me.

Reference link: https://blog.csdn.net/qq_33811662/article/details/80639390 Reference books: Java programming ideas, Java core technology I previous review: java object-oriented learning directory