我有下一个代码:
public class NotesCollection {
private Notes[] notesCollection;
private static class Notes {
private final Person person;
private String info;
private Notes(Person person, String info) {
this.person = person;
this.info = info;
}
private static class Person {
private String firstName;
private String lastName;
private Person(String firstName, String lastName) {
this.firstName = firstName;
this.lastName = lastName;
}
}
public boolean create(String firstName, String lastName, String info) {
// should create new element in the array 'notesCollection'
}
}
}
我的方法 create() 有问题。为了调用“Notes”类的构造函数,我之前应该有一个 Person 的实例,因为字段“Person person”是最终的,所以我只能在那个构造函数中初始化它,因为这样的代码不起作用
public boolean create(String firstName, String lastName, String info) {
Notes notes = new Notes(null, info);
notes.person = new Notes.Person(firstName, lastName); // error
我不能那样做
public boolean create(String firstName, String lastName, String info) {
Person person = new Notes.Person(firstname, lastname); // error
}
那我可以在这里做什么?将感谢任何建议。