Java第十五周作业

Posted 2021-06-16 袁祥凤

Cola公司的雇员分为以下若干类：(知识点：多态) [必做
题]
• 4.1 ColaEmployee ：这是所有员工总的父类，属性：员工的
姓名,员工的生日月份。方法：getSalary(int month) 根据参数
月份来确定工资，如果该月员工过生日，则公司会额外奖励
100 元。
• 4.2 SalariedEmployee ： ColaEmployee 的子类，拿固定工
资的员工。属性：月薪
课后作业
• 4.3 HourlyEmployee ：ColaEmployee 的子类，按小时拿工
资的员工，每月工作超出160 小时的部分按照1.5 倍工资发
放。属性：每小时的工资、每月工作的小时数
• 4.4 SalesEmployee ：ColaEmployee 的子类，销售人员，
工资由月销售额和提成率决定。属性：月销售额、提成率
• 4.5 定义一个类Company，在该类中写一个方法，调用该
方法可以打印出某月某个员工的工资数额，写一个测试类
TestCompany,在main方法，把若干各种类型的员工放在一
个ColaEmployee 数组里，并单元出数组中每个员工当月的
工资。

 

  1 package chap11;
  2 public class ColaEmployee {
  3     protected String name;
  4     protected int month;
  5 
  6     public ColaEmployee() {
  7         super();
  8 
  9     }
 10 
 11     public ColaEmployee(String name, int month) {
 12         super();
 13         this.name = name;
 14         this.month = month;
 15     }
 16 
 17     public String getName() {
 18         return name;
 19     }
 20 
 21     public void setName(String name) {
 22         this.name = name;
 23     }
 24 
 25     public int getMonth() {
 26         return month;
 27     }
 28 
 29     public void setMonth(int month) {
 30         this.month = month;
 31     }
 32 
 33     public double getSalary(int month) {
 34         return 0;
 35 
 36     }
 37 }
 38 class SalariedEmployee extends ColaEmployee {
 39     double monthSalary;
 40 
 41     public SalariedEmployee() {
 42         super();
 43 
 44     }
 45 
 46     public SalariedEmployee(String name, int month, double monthSalary) {
 47         super(name, month);
 48         this.monthSalary = monthSalary;
 49 
 50     }
 51 
 52     public double getSalary(int month) {
 53         if (super.getMonth() == month) {
 54             return monthSalary + 100;
 55         } else {
 56             return monthSalary;
 57         }
 58     }
 59 }
 60 class HourlyEmployee extends ColaEmployee {
 61     int hourSalary;
 62     int hourNumber;
 63 
 64     public HourlyEmployee() {
 65         super();
 66 
 67     }
 68 
 69     public HourlyEmployee(String name, int month, int hourSalary, int hourNumber) {
 70         super(name, month);
 71         this.hourSalary = hourSalary;
 72         this.hourNumber = hourNumber;
 73     }
 74 
 75     public double getSalary(int month) {
 76         if (super.getMonth() > month) {
 77             if (hourNumber > 160) {
 78                 return hourSalary * 160 + hourSalary * (hourNumber - 160) * 1.5 + 100;
 79             } else {
 80                 return hourSalary * hourNumber + 100;
 81 
 82             }
 83         } else {
 84             if (hourNumber > 160) {
 85                 return hourSalary * 160 + hourSalary * (hourNumber - 160) * 1.5;
 86             } else {
 87                 return hourSalary * hourNumber;
 88 
 89             }
 90         }
 91     }
 92 }
 93 class SalesEmployee extends ColaEmployee {
 94     int monthSales;
 95     double ticheng;
 96 
 97     public SalesEmployee() {
 98         super();
 99 
100     }
101 
102     public SalesEmployee(String name, int month, int monthSales, double ticheng) {
103         super(name, month);
104         this.monthSales = monthSales;
105         this.ticheng = ticheng;
106     }
107 
108     public double getSalary(int month) {
109         if (super.getMonth() == month) {
110             return monthSales * ticheng + 100;
111         } else {
112             return monthSales * ticheng;
113         }
114     }
115 
116 }
117 class Company {
118     public void getSalary(ColaEmployee c, int month) {
119         System.out.println(c.name + "在" + month + "月的月薪为" + c.getSalary(month) + "元");
120     }
121 
122 }

 

 1 package chap11;
 2 public class text {
 3 
 4     public static void main(String[] args) {
 5         // TODO Auto-generated method stub
 6         ColaEmployee[] c = { 
 7                 new SalariedEmployee("月薪工", 6, 4500), 
 8                 new HourlyEmployee("小时工", 5, 10, 300),
 9                 new SalesEmployee("提成工", 3, 20000, 0.3) 
10                 };
11         for (int i = 0; i < c.length; i++) {
12             new Company().getSalary(c[i], 10);
13         }
14 
15     }
16 
17 }

• 5、利用接口实现动态的创建对象[选做题]
• 5.1 创建4个类：
• 苹果
• 香蕉
• 葡萄
• 园丁
• 5.2 在三种水果的构造方法中打印一句话.
• 以苹果类为例
• class apple
• {
• public apple()
• {
• System.out.println(―创建了一个苹果类的对象‖);
}
• }
课后作业
• 类图如下：
• 5.3 要求从控制台输入一个字符串，根据字符串的
值来判断创建三种水果中哪个类的对象

 

 1 package chap11;
 2 
 3 import java.util.Scanner;
 4 public interface Fruit {
 5 
 6 }
 7 class Apple implements Fruit {
 8     public Apple() {
 9         System.out.println("创建了一个苹果对象");
10     }
11 }
12 class Banana implements Fruit {
13     public Banana() {
14         System.out.println("创建了一个香蕉对象");
15     }
16 }
17 class Putao implements Fruit {
18     public Putao() {
19         System.out.println("创建了一个葡萄对象");
20     }
21 }class Method{
22     public Fruit create() {
23         Fruit f = null;
24         Scanner input = new Scanner(System.in);
25        String name = input.next();
26         if (name.equals("苹果")) {
27             f = new Apple();
28         } else if (name.equals("香蕉")) {
29             f = new Banana();
30         } else if (name.equals("葡萄")) {
31             f = new Putao();
32         } else {
33            System.out.println("不会种");
34         }
35         return f;
36 
37     }
38 }

 

 1 package chap11;
 2 public class text1 {
 3 
 4     public static void main(String[] args) {
 5         // TODO Auto-generated method stub        
 6             Method m = new Method();
 7                 m.create();
 8         
 9      
10     }
11 
12 }