Java 的对象传递

class Person{
// 设置变量
private int pid;
private String pname;
private int page;
private Car carname;

//  多参构造方法
public Person(String pname, int page){
this.setPname(pname);
this.setPage(page);
}

public String getInfo(){
return "姓名： " + getPname() + "\r" + "年龄：" + getPage() + "\r";
}

public void setCarName(Car carname){
this.carname = carname;
}
public Car getCarName(){
return this.carname;
}

public void setPname(String pname){
this.pname = pname;
}
public String getPname(){
return this.pname;
}

public void setPage(int page){
this.page = page;
}
public int getPage(){
return this.page;
}

}

class Car{
private String cname;
private Person pname;
// 构造函数
public Car(String cname){
this.setCname(cname);
}

public void setPname(Person pname){
this.pname = pname;
}
public Person getPname(){
return this.pname;
}

public void setCname(String cname){
this.cname = cname;
}
public String getCname(){
return this.cname;
}

public String getCarInfo(){
return "车名：" + getCname();
}
}

public class testDemo {

public static void main(String[] args) {

Person p = new Person("Tom", 20);
Car car = new Car("宝马");
p.setCarName(car);
car.setPname(p);
System.out.println(p.getInfo());
// 通过 Person 对象获取 其 Car 对象中的内容
System.out.println(p.getCarName().getCarInfo());

// 通过 Car 对象获取 Person 对象中的内容
System.out.println(car.getPname().getPname());

}

}