小编use*_*173的帖子

我已将下面的所有代码(5个类)包含在一个简单的学生数据库中.

我认为这个代码与认为在Name,Address和Student类中包含所有当前存在的getter和setter的人相关.我认为代码将在没有它们的情况下运行,并且它们不是必需的并且应该被删除？如果有必要,有人可以解释为什么或有人确认他们没有必要吗？

地址类

public class Address {

private String street, area, city, country;

public Address(String street, String area, String city, String country) {
    this.street = street;
    this.area = area;
    this.street = city;
    this.country = country;
}

public void setStreet(String street) {
    this.street = street;
}

public void setArea(String area) {
    this.area = area;
}

public void setCity(String city) {
    this.city = city;
}

public void setCountry(String country) {
    this.country = country;
}

public String …

到目前为止,我一直非常乐于助人,尽管我在措辞问题方面并不是很出色.我想我几乎知道自己在做什么,但我正试图了解吸气剂,制定者和构造者之间的关系.我有两个类如下 Student,Name我对getter和setter中的参数与构造函数之间的关系感到困惑

如果我从Name构造函数中删除参数,即这

public Name (){
this.firstName = firstName;
this.lastName = lastName;

并编辑了学生构造函数以反映这一点

public Student(int id, String firstName, String lastName, String street, String area, String city, String country, int age, char gender, String college, String course,  int level, int gradePointAverage){ //This is the list of variables called from the Student class
this.id = id;
this.name = new Name(); //I have removed the parameters here
this.name.setFirstName(firstName);
this.name.setLastName(lastName);
this.address = new Address(street, area, city, country);
this.age = age;
this.gender …