java-Object-oriented

1. The concept of objects
2. What is object-oriented
3. Class
4. What is an object's properties
5. What is a method of an object
6. Class-to-object relationships/differences

3. Class

A class is a mold that determines the characteristics (attributes) and behavior (methods) that an object will have;

Characteristics of the class:

• Class is the type of object;
• A collection of groups of objects with the same properties and methods;

4. Properties of an Object

The specific characteristics that the object possesses;

Each object has its own specific value;

5. Methods of the object

Actions that an object can perform

6. Classes and objects

A class is an abstract concept, just a template that is used to describe an object's information;

object is a concrete entity, which obtains specific object information according to the class;

For example:

A mobile phone is an object;

Phone class: Includes properties and methods

Properties are CPU, memory, screen, etc.

Methods have to call, send text messages and so on;

java-Object-oriented