第十五周作业

4、 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
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。

package 第十五周作业;

public class ColaEmployee {
    protected String name;
          protected int month;
      
          public ColaEmployee() {
              super();
      
         }
     
         public ColaEmployee(String name, int month) {
             super();
             this.name = name;
             this.month = month;
        }
    
         public String getName() {
             return name;
         }
     
         public void setName(String name) {
             this.name = name;
         }
     
         public int getMonth() {
             return month;
         }
     
         public void setMonth(int month) {
            this.month = month;
        }
    
         public double getSalary(int month) {
             return 0;
     
        }
     
     }
package 第十五周作业;

public class SalariedEmployee extends ColaEmployee {
    double monSalary;// 月薪
      
          public SalariedEmployee() {
              super();
      
          }
     
         public SalariedEmployee(String name, int month, double monSalary) {
             super(name, month);
             this.monSalary = monSalary;
     
         }
     
         public double getSalary(int month) {
             if (super.getMonth() == month) {
                 return monSalary + 100;
             } else {
                 return monSalary;
            }
        }
     }
    
package 第十五周作业;

public class HourlyEmployee extends ColaEmployee {
    int hourSalary;// 时薪
          int hourNum;// 每月工作的小时数
      
          public HourlyEmployee() {
              super();
      
         }
     
         public HourlyEmployee(String name, int month, int hourSalary, int hourNum) {
             super(name, month);
             this.hourSalary = hourSalary;
             this.hourNum = hourNum;
         }
     
         public double getSalary(int month) {
             if (super.getMonth() > month) {
                 if (hourNum > 160) {
                     return hourSalary * 160 + hourSalary * (hourNum - 160) * 1.5
                             + 100;
                 } else {
                     return hourSalary * hourNum + 100;
     
                }
            } else {
                 if (hourNum > 160) {
                     return hourSalary * 160 + hourSalary * (hourNum - 160) * 1.5;
                 } else {
                    return hourSalary * hourNum;
    
                }
            }
        }
     
 }
package 第十五周作业;

public class SalesEmployee extends ColaEmployee {
    int monthSales;// 月销售额
          double royaltyRate;// 提成率
      
          public SalesEmployee() {
              super();
      
         }
     
         public SalesEmployee( String name,int month, int monthSales,
                 double royaltyRate) {
             super(name, month);
             this.monthSales = monthSales;
             this.royaltyRate = royaltyRate;
         }
     
         public double getSalary(int month) {
             if (super.getMonth() == month) {
                 return monthSales * royaltyRate + 100;
             } else {
                 return monthSales * royaltyRate;
             }
         }
     
    }
package 第十五周作业;

public class Company {
    public void getSalary(ColaEmployee c, int month) {
         System.out.println(c.name + "在" + month + "月的月薪为" + c.getSalary(month)+ "元");
         }

}
package 第十五周作业;

public class TestCompany {
    public static void main(String[] args) {
                  // 创建、初始化数组
                ColaEmployee[] cel = {
                         new SalariedEmployee("salariedEmployee", 6, 30000),// name,month,月薪
                         new HourlyEmployee("hourlyEmployee", 5, 100, 300),// name,month,时薪,小时数
                         new SalesEmployee("salesEmployee", 3, 500000, 0.3) // name,month,月销售额,提成率
                 };
                // 数组遍历
                for (int i = 0; i < cel.length; i++) {
                    new Company().getSalary(cel[i], 10);
                 }
         
            }


}

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‖);

}

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

package 第十五周作业;

import java.util.Scanner;

public interface Fruit {

    

}
class Apple implements Fruit {
     public Apple() {
        System.out.println("创建了一个苹果对象");
    }
 }
 
 class Banana implements Fruit {
     public Banana() {
        System.out.println("创建了一个香蕉对象");
     }
 }
 
 class Putao implements Fruit {
     public Putao() {
         System.out.println("创建了一个葡萄对象");
     }
 }

 class Gardener {
     public Fruit create() {
         Fruit f = null;
         Scanner input = new Scanner(System.in);
        String name = input.next();
         if (name.equals("苹果")) {
             f = new Apple();
         } else if (name.equals("香蕉")) {
             f = new Banana();
         } else if (name.equals("葡萄")) {
             f = new Putao();
         } else {
            System.out.println("不会种");
         }
         return f;
 
     }
 }
package 第十五周作业;

public class Test2 {

    /**
     * @param args
     */
     public static void main(String[] args) {
             Gardener g = new Gardener();
                 g.create();
         
      }
}

 

 
posted @ 2021-06-14 17:36  晨曦1314520  阅读(19)  评论(0编辑  收藏  举报