Analysis of objects, classes, properties, and methods:
Take people as an example.
Category: People can be regarded as a class.
Object: specific people (yellow, white, black, Chinese, etc.) can be regarded as objects, and can be further distinguished according to needs, such as men woman.
Attributes: For example, the characteristics of yellow people: yellow skin, black hair, black eyes, etc. These are the attributes that yellow people have. They exist by themselves or can be acquired. They are There is no need for people to deliberately act, it manifests itself naturally.
Method: Method is actually an explanation of a specific behavior of a certain person, such as being able to walk or talk.
Recommended java basic video tutorial: java learning
For example:
public class PersonDemo { //這是類
private String name; //這是屬性 姓名
private String sex; //這是屬性 性別
private int age; //這是屬性 年齡
public void say(){ //這是方法
System.out.println("我是黃種人");
}
public static void main(String[] args) { //main函數(shù) Java應用程序的入口方法
PersonDemo PD = new PersonDemo(); //new一個對象
PD.say(); //調用方法
}Recommended article tutorial: zero basic introduction to java
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