Java第十五周作业

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。

package Week15;

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 double getSalary(int month) {
            return 0;
        }

    }

package Week15;

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 Week15;

public class Hourlyemployee extends Colaemployee {
    protected int hourmoney;
    protected int daymonth;

    public Hourlyemployee() {
        super();
    }

    public Hourlyemployee(String name, int month, int hourmoney, int daymonth) {
        super(name, month);
        this.hourmoney = hourmoney;
        this.daymonth = daymonth;
    }

    public double getSalary(int month) {
        if (super.month == month) {
            if (daymonth > 160) {
                return hourmoney * 160 + hourmoney * (daymonth - 160) * 1.5
                        + 100;
            } else {
                return hourmoney * daymonth + 100;
            }
        } else {
            if (daymonth > 160) {
                return hourmoney * 160 + hourmoney * (daymonth - 160) * 1.5;
            } else {
                return hourmoney * daymonth;
            }
        }
    }

}

package Week15;


    public class Salariedemployee extends Colaemployee {
        protected double money;

        public Salariedemployee() {
            super();
        }

        public Salariedemployee(String name, int month, double money) {
            super(name, month);
            this.money = money;
        }

        public double getSalary(int month) {
            if (super.month == month) {
                return money + 100;
            } else {
                return money;
            }
        }

    }

package Week15;

public class Salesemployee extends Colaemployee {
    protected int monthsales;
    protected double rate;

    public Salesemployee() {
        super();
    }

    public Salesemployee(String name, int month, int monthsales, double rate) {
        super(name, month);
        this.monthsales = monthsales;
        this.rate = rate;
    }

    public double getSalary(int month) {
        if (super.month == month) {
            return monthsales * rate + 100;
        } else {
            return monthsales * rate;
        }
    }

}

package Week15;

public class Testcompany {
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Colaemployee c1[] = { new Salariedemployee("salare", 5, 10000),
                new Hourlyemployee("hourlye", 5, 200, 300),
                new Salesemployee("salese", 6, 200000, 0.8) };
        for (int i = 0; i < c1.length; i++) {
            new Company().getSalary(c1[i], 5);

        }
    }
}

 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：

package F;
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 F;

public class Test9 {

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