class Person{
private String name;
private int age;
private Person p1 = new Person();
private Person p2 = new Person();
public Person(String name, int age){
this.name = name;
this.age = age;
}
public Person(Person p1, Person p2){
this.p1 = p1;
this.p2 = p2;
}
}

课本上到处都是，照着写吧！写完了你就进步了

这得有多白呀