class Member{
    private int id;
    private String name;
    private Car car;//表示屬於人的車
    public Member(int id,String name){
        this.id=id;
        this.name=name;
    }
    public String toString(){
        return "編號:" +  this.id + ",名字:" + this.name;
    }
    public void setCar(Car car){
        
 
this.car  = car;
    }
    public Car getCar(){
        return this.car;
    }    
}
class Car{
    private String carName;
    private Member member;//人所擁有的車
    public Car(String carName){
        this.carName  = carName;
    }
    public String toString(){
        return "車的名字:" + this.carName;
    }
    
 
public void setMember(Member member){
        this.member=member;
    }
    public Member getMember(){
        return this.member;
    }
}

public class Test{
    public static void main(String args[]){    
        //第一步添加人和車；
        Member m = new Member(10,"張三");
        Car c = new Car("法拉利");
        
 
//第二步設置人和車的關系；
        m.setCar(c);//人擁有一輛法拉利
        c.setMember(m); //一輛車屬於一個人
        //第三步：通過人找到車，通過車找到車主
        System.out.println(m.getCar());//通過m這個人找到他的車
        System.out.println(c.getMember());//通過c這個車找到其車主
    }
}

簡單的一個代碼來介紹引用傳遞的應用；

引用傳遞應用實例