java - 使用多个类时输出奇怪

Question

我是 Java 编程的新手，我即将完成一个非常大的项目。我正在尝试制作一个简单地回传信息的员工注册表。每当我输入信息时，它只会返回诸如 Name@5a965654 之类的内容。我的类(class)如下，如有任何帮助，我们将不胜感激。

主要内容:

import java.util.Scanner;

public class Main 
{
    public static void main(String[] args)
    {
        Scanner Input = new Scanner(System.in);

        System.out.println("Enter the number of employees to enter.");
        int employeeCount = Input.nextInt();
        Input.nextLine();

        Employee employees[] = new Employee[employeeCount];

        String firstName;
        String lastName;
        String street;
        String city;
        String state;
        String zipCode;
        String monthHired;
        String dateHired;
        String yearHired;
        int employeeID;

        for(int x = 0; x < employeeCount; x++)
        {
            System.out.println("Please enter the first name of employee " + (x + 1));
            firstName = Input.nextLine();
            System.out.println("Please enter the last name of employee " + (x + 1));
            lastName = Input.nextLine();
            System.out.println("Please enter the street of employee " + (x + 1));
            street = Input.nextLine();
            System.out.println("Please enter the city of employee " + (x + 1));
            city = Input.nextLine();
            System.out.println("Please enter the state of employee " + (x + 1));
            state = Input.nextLine();
            System.out.println("Please enter the zip code of employee " + (x + 1));
            zipCode = Input.nextLine();
            System.out.println("Please enter the month hired for employee " + (x + 1));
            monthHired = Input.nextLine();
            System.out.println("Please enter the date hired for employee " + (x + 1));
            dateHired = Input.nextLine();
            System.out.println("Please enter the year hired for employee " + (x + 1));
            yearHired = Input.nextLine();
            Name name = new Name(firstName, lastName);
            name.setName(firstName, lastName);
            Address address = new Address(street, city, state, zipCode);
            DateOfHire hireDate = new DateOfHire(monthHired, dateHired, yearHired);
            employees[x] = new Employee(name, address, hireDate, x);
        }

        for(int x = 0; x < employeeCount; x++)
        {
            employees[x].printInfo(x);
        }
    }
}

员工类:

public class Employee 
{
    private Name name;
    private Address address;
    private DateOfHire hireDate;
    int ID;

    public Employee()
    {

    }

    public Employee(Name name, Address address, DateOfHire hireDate, int x)
    {
        this.name = name;
        this.address = address;
        this.hireDate = hireDate;
        this.ID = x;
    }

    public void printInfo(int x)
    {
        System.out.println("Employee-" + (x + 1));
        System.out.println("Name: " + this.name);
        System.out.println("Address: " + this.address);
        System.out.println("Date of Hire: " + this.hireDate);
    }
}

Name、DateHired 和 Address 类的格式:

public class Name 
{
    private String firstName;
    private String lastName;

    public Name()
    {

    }

    public Name(String firstName, String lastName)
    {
        this.firstName = firstName;
        this.lastName = lastName;
    }

    public void setName(String firstName, String lastName)
    {
        this.firstName = firstName;
        this.lastName = lastName;
    }

    public String getName()
    {
        return firstName + " " + lastName;
    }
}

Answer 1

A Name与 String 不同, 所以当你打印 this.name在 Employee.printInfo , 它打印 Name@[numbers] , 表示您正在打印的是 Name对象位于数字所描述的位置。

尝试用

替换该行

System.out.println("Name: " + this.name.getName());

此外，您还需要为 Address 执行类似的操作和 DateOfHire ，但我不知道你为那些实现了什么，所以我真的不能说具体要做什么。不过，从本质上讲，您需要一个方法来提供您要打印的任何对象的字符串表示形式。