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Are methods in java objects?

王林
王林Original
2019-11-30 11:28:542082browse

Are methods in java objects?

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.

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For example:

public class PersonDemo {  //这是类
    private String name;  //这是属性 姓名
      private String sex;  //这是属性 性别
    private int age;  //这是属性 年龄

    public void say(){  //这是方法
        System.out.println("我是黄种人");
    }

    public static void main(String[] args) {   //main函数  Java应用程序的入口方法
        PersonDemo PD = new PersonDemo(); //new一个对象 
        PD.say();  //调用方法
    }

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