java - java中访问对象变量

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所以我正在做一个java作业，内容如下:

“编写一个对员工进行建模的程序。员工有员工编号、姓名、地址和雇用日期。姓名由名字和姓氏组成。地址由街道、城市、州(2 个字符)和 5 位邮政编码。日期由整数月、日和年组成。在解决方案中使用 Employee 类、Name 类、Address 类和 Date 类。提供适当的类构造函数、getter 方法、setter 方法以及您认为必要的任何其他方法。您的程序应提示用户输入多个员工的数据，然后显示该数据。应从命令行输入要存储数据的员工数量。”

由于我在格式化时遇到问题，因此无法发布代码，但我所做的是创建一个员工对象数组。该数组的标题为 dbase[]。然后，每个 Employee 对象为日期、姓名和地址标题 date1、name1 和 address1 创建一个单独的对象。然而，每当我尝试使用类似 dbase[j].name1.getFirstName 的方法访问日期/名称/地址中的 getter 方法之一时，我都会遇到一个错误，提示 cannot find symbol: name 1 ---位置:Employee类。

public class EmployeeProgram {
public static void main (String[] args) {
    int i = Input.getInt ("How many employees would you like to enter? ");
    int j;
    Employee [] dbase = new Employee [i];
    for (j = 0; j < i; j++) {
        String firstName = Input.getString ("What is an employee's first name?");
        String lastName = Input.getString ("What is this employee's last name?");

        String street = Input.getString ("On what street does this employee live?");
        String city = Input.getString ("In which city does this employee live?");
        String state = Input.getString ("In which state does this employee live? (abbreviation)");
        String zipcode = Input.getString ("What is this employee's zip code?");

        int month = Input.getInt ("In what month was this employee born?");
        int day = Input.getInt ("On what day was this employee born?");
        int year = Input.getInt ("In what year was this employee born?");

        int employeeID = Input.getInt ("What should this employee's employee id be?");

        dbase[j] = new Employee(firstName, lastName, street, city, state, zipcode, month, day, year, employeeID);
    }

    for (j = 0; j < i; j++) {
        System.out.print ( "Employee number " + (j + 1) + " is named ");
        System.out.print ( dbase[j].name.getFirst() + " " + dbase[j].name.getLast() + " and lives on " + dbase[j].name.getStreet());
        System.out.print ( " in " + dbase[j].address.getCity() + " " + dbase[j].address.getState() + ", " + dbase[j].address.getZip());
        System.out.print ( ". He will be hired on " + dbase[j].date.GetMonth() + "-" + dbase[j].date.getDay() + "-" + dbase[j].date.getYear() );
        System.out.print ( " and his ID is " + dbase[j].getEmployeeID());
        System.out.println ();
    }
}
}

class Employee {
int employeeID = 0;
Employee( String firstName1, String lastName1, String street1, String city1, String state1, String zipcode1, int month1, int day1, int year1, int employeeID1 ) {
    name name = new name( firstName1, lastName1 );
    address address = new address( street1, city1, state1, zipcode1 );
    date date = new date( month1, day1, year1);
    employeeID = employeeID1;   
}
int getEmployeeID() {
    return employeeID;
}
}

class name {
String firstName = "";
String lastName = "";
name(String newFirstName, String newLastName) {
    firstName = newFirstName;
    lastName = newLastName;
}
String getFirst() {
    return firstName;
}
String getLast() {
    return lastName;
}   
}

我没有发布地址或日期类，但它们与名称类基本相同

Answer 1

您尚未在 Employee 类中创建任何字段。只是构造函数内的局部变量。所以添加

private Name name;
private Address address;

...(类名始终大写)并为它们添加 getter 和 setter。

在你的 main 中你应该使用

dbase[j].getName().getFirst()

等等...