java - 类构造函数中的堆栈溢出错误

Question

请原谅这可能是一个非常基本的问题，但我正在编写一个程序来存储员工信息，并且它工作正常，直到它尝试在我的员工类中设置信息。它给出了一个 stackoverflow 错误，我不明白为什么。感谢您的帮助。

主类:

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 employee[] = new Employee[employeeCount];
        String namesTemp;
        String streetTemp;
        String cityTemp;
        String stateTemp;
        String zipCodeTemp;
        String address;
        String dateOfHireTemp;

        for(int x = 0; x < employeeCount; x++)
        {
            System.out.println("Please enter the name of Employee " + (x + 1));
            namesTemp = Input.nextLine();
            System.out.println("Please enter the street for Employee " + (x + 1));
            streetTemp = Input.nextLine();
            System.out.println("Please enter the city of Employee " + (x + 1));
            cityTemp = Input.nextLine();
            System.out.println("Please enter the state of Employee " + (x + 1));
            stateTemp = Input.nextLine();
            System.out.println("Please enter the zip code of Employee " + (x + 1));
            zipCodeTemp = Input.nextLine();
            address = streetTemp + ", " + cityTemp + ", " + stateTemp + ", " + zipCodeTemp;
            System.out.println("Please enter the date of hire for Employee " + (x + 1));
            dateOfHireTemp = Input.nextLine();
            System.out.println("The employee ID for employee " + (x + 1) + " is " + (x + 1));
            employee[x] = new Employee(x, namesTemp, address, dateOfHireTemp);
        }
    }
}

员工类别:

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

    public Employee()
    {

    }

    public Employee(int employeeID, String name, String address, String hireDate)
    {
        String temp;
        Name employeeName = new Name(name);
        this.employeeID = employeeID;
    }
}

命名类:

public class Name 
{
    public Name name;

    public Name(String name)
    {
        Name employeeName = new Name(name);
        this.name = employeeName;
    }
}

Answer 1

导致 StackoverflowExceptions 的最常见原因是不知不觉地进行了递归，这是否发生在这里？ ...

public Name(String name)
{
    Name employeeName = new Name(name);  // **** YIKES!! ***
    this.name = employeeName;
}

宾果:递归!

此构造函数将创建一个新的 Name 对象，其构造函数将创建一个新的 Name 对象，其构造函数将...因此您将无限期地创建新的 Name 对象，或者直到堆栈内存耗尽。解决方案:不要这样做。将名称分配给字符串:

class Name {
    String name; // ***** String field!

    public Name(String name)
    {
        this.name = name;  // this.name is a String field
    }