抽象类Employer,包含姓名、部门和工资三个数据域,计算工资的方法computerSalary()方法定义为抽象方法;
时间: 2024-04-08 19:31:11 浏览: 19
抽象类Employer的定义如下:
```java
public abstract class Employer {
private String name;
private String department;
private double salary;
public Employer(String name, String department, double salary) {
this.name = name;
this.department = department;
this.salary = salary;
}
public abstract double computeSalary();
// Getters and setters for name, department, and salary
}
```
在这个抽象类中,我们有三个数据域:姓名(name)、部门(department)和工资(salary)。还定义了一个抽象方法computeSalary(),用于计算工资。由于这是一个抽象方法,所以在抽象类中并没有提供具体的实现。具体的子类需要根据自己的业务逻辑来实现computeSalary()方法。
相关问题
(1)抽象类Employer,包含姓名、部门和工资三个数据域,计算工资的方法computerSalary()方法定义为抽象方法; (2)定义Employer的子类月薪制员工MonthlyEmployee,工资计算方法为基本工资+奖金 (3)定义Employer的子类小时制员工HourlyEmployee,工资计算方法为小时费率*该月工作小时数 要求: (1)画出UML类图 (2)编写代码,创建MonthlyEmployee及HourlyEmployee的对象,调用computerSalary()方法 (3) 思考这样设计有何缺陷?(提示,例如一个人既是月薪制员工,又是小时制员工)
以下是满足要求的UML类图:
```
+----------------+ +------------------+
| Employer |<--------------->| MonthlyEmployee |
+----------------+ +------------------+
| - name: String | | - bonus: double |
| - department: | +------------------+
| String | | + computeSalary()|
| - salary: | +------------------+
| double |
+----------------+
^
|
|
+----------------+
| HourlyEmployee |
+----------------+
| - hourlyRate: |
| double |
| - hoursWorked: |
| int |
+----------------+
| + computeSalary()|
+----------------+
```
下面是使用Java代码实现上述需求:
```java
public abstract class Employer {
private String name;
private String department;
private double salary;
public Employer(String name, String department, double salary) {
this.name = name;
this.department = department;
this.salary = salary;
}
public abstract double computeSalary();
// Getters and setters for name, department, and salary
}
public class MonthlyEmployee extends Employer {
private double bonus;
public MonthlyEmployee(String name, String department, double salary, double bonus) {
super(name, department, salary);
this.bonus = bonus;
}
@Override
public double computeSalary() {
return getSalary() + bonus;
}
}
public class HourlyEmployee extends Employer {
private double hourlyRate;
private int hoursWorked;
public HourlyEmployee(String name, String department, double salary, double hourlyRate, int hoursWorked) {
super(name, department, salary);
this.hourlyRate = hourlyRate;
this.hoursWorked = hoursWorked;
}
@Override
public double computeSalary() {
return hourlyRate * hoursWorked;
}
}
public class Main {
public static void main(String[] args) {
MonthlyEmployee monthlyEmp = new MonthlyEmployee("John", "Finance", 5000, 1000);
HourlyEmployee hourlyEmp = new HourlyEmployee("Jane", "Admin", 10, 20, 160);
System.out.println("Monthly Employee Salary: " + monthlyEmp.computeSalary());
System.out.println("Hourly Employee Salary: " + hourlyEmp.computeSalary());
}
}
```
这样的设计缺陷在于,一个人既是月薪制员工又是小时制员工时,需要创建两个不同的对象来表示同一个人。这可能会导致数据冗余和不一致性。同时,如果需要对该员工进行统一管理和计算工资,就需要编写额外的代码来处理这种情况。为了解决这个问题,可以考虑引入更灵活的设计模式,例如策略模式或组合模式。
使用抽象类编写程序实现显示员工基本信息。具体要求如下: (1)使用抽象类实现基类employer(体会接口和抽象类的不同),包含姓名、部门和工资三个属性,显示工资的方法showsalary()和显示奖金的抽象方法showbonus();提示:因每位职工奖金不同,showbonus()方法定义为抽象方法,只抽象定义,不具体实现; (2)定义basicemployee和goodemployee类,重写employer类中的方法,不同员工有不同的工资和奖金; (3)定义主类进行测试,要求输入两个不同的员工信息,
并分别显示他们的基本信息、工资和奖金。
回复:
以下是使用抽象类编写程序实现显示员工基本信息的代码:
//定义抽象类employer
abstract class employer{
String name; //姓名
String department; //部门
double salary; //工资
//构造方法
public employer(String name, String department, double salary){
this.name = name;
this.department = department;
this.salary = salary;
}
//显示工资的方法
public void showsalary(){
System.out.println("工资:" + salary);
}
//显示奖金的抽象方法
public abstract void showbonus();
}
//定义basicemployee类,继承employer类
class basicemployee extends employer{
//构造方法
public basicemployee(String name, String department, double salary){
super(name, department, salary);
}
//重写showbonus()方法
public void showbonus(){
System.out.println("奖金:无");
}
}
//定义goodemployee类,继承employer类
class goodemployee extends employer{
double bonus; //奖金
//构造方法
public goodemployee(String name, String department, double salary, double bonus){
super(name, department, salary);
this.bonus = bonus;
}
//重写showbonus()方法
public void showbonus(){
System.out.println("奖金:" + bonus);
}
}
//定义主类
public class Main{
public static void main(String[] args){
//创建两个不同的员工对象
basicemployee employee1 = new basicemployee("张三", "人事部", 5000);
goodemployee employee2 = new goodemployee("李四", "销售部", 6000, 2000);
//显示员工1的基本信息、工资和奖金
System.out.println("员工1的基本信息:");
System.out.println("姓名:" + employee1.name);
System.out.println("部门:" + employee1.department);
employee1.showsalary();
employee1.showbonus();
//显示员工2的基本信息、工资和奖金
System.out.println("员工2的基本信息:");
System.out.println("姓名:" + employee2.name);
System.out.println("部门:" + employee2.department);
employee2.showsalary();
employee2.showbonus();
}
}