Java面向对象编程 -7

类关联结构
引用传递是整个Java开发与设计过程之中最为重要的技术组成，对于引用传递也与我们实际生活密切相关。

class Car{
    private float value;
    private String name;
    private Person person;
    public void setName(String name){
        this.name = name;
    }
    public String getName(){
        return this.name;
    }
    public void setValue(float value){
        this.value = value;
    }
    public float getValue(){
        return this.value;
    }
    public void setPerson(Person person){
        this.person = person;
    }
    public Person getPerson(){
        return this.person;
    }
    public String getInfo(){
        return "name"+name+"value"+value;
    }
    public Car(String name,float value){
        this.name = name;
        this.value = value;
    }
}


class Person{
    private String name;
    private int age;
    private Car car;
    
    public void setName(String name){
        this.name= name;
    }
    public String getName(){
        return this.name;
    }
    public void setAge(int age){
        this.age = age;
    }
    public int getAge(){
        return this.age;
    }
    public void setCar(Car car){
        this.car = car;
    }
    public Car getCar(){
        return this.car;
    }
    public String getInfo(){
        return "name"+name+"age"+age;
    }
    public Person(String name,int age){
        this.name = name;
        this.age = age;
    }
}


public class name { 
    public static void main(String args[]){
        Person person = new Person("张三",18);
        Car car = new Car("宾利", 20000000.00f);
        person.setCar(car);
        car.setPerson(person);
        System.out.println(person.getCar().getInfo());//代码链
        System.out.println(car.getPerson().getInfo());
    }
}

Car和Person都可以明确地描述某一类群体，现在是对于群体的关系做出的一种设置 这就实现了一种基础的引用过程