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 home15;

public class ColaEmployee {
    String name;
    int 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 ColaEmployee(String name, int month) {
        super();
        this.name = name;
        this.month = month;
    }
    public ColaEmployee() {
        super();
    }
    public double getSalary(int month){
        return 0;
    }
}

package home15;

public class SalariedEmployee extends ColaEmployee {
   double money;



public SalariedEmployee(String name, int month,double money) {
    super(name, month);
    this.money=money;
    // TODO Auto-generated constructor stub
}
  public double getSalary(int month){
      if (super.month==month) {
          return money +100;
    } else {
        return money;
    }
  } 
   
}

package home15;

public class HourlyEmployee extends ColaEmployee {
   int hourMoney;
   int hourSum;
public int getHourMoney() {
    return hourMoney;
}
public void setHourMoney(int hourMoney) {
    this.hourMoney = hourMoney;
}
public int getHourSum() {
    return hourSum;
}
public void setHourSum(int hourSum) {
    this.hourSum = hourSum;
}
public HourlyEmployee(String name, int month, int hourMoney, int hourSum) {
    super(name, month);
    this.hourMoney = hourMoney;
    this.hourSum = hourSum;
}
public HourlyEmployee(String name, int month) {
    super(name, month);
}
   public double getSalary(int month){
       if (super.month==month) {
           if (hourSum>160) {
               return hourMoney*160+hourMoney*(hourSum-160)*1.5+100;
        } else {
            return hourMoney*hourSum+100;
        }
    } else {
        if (hourSum>160) {
           return hourMoney*160+hourMoney*(hourSum-160)*1.5;
    } else {
        return hourMoney*hourSum+100;
    }

    }
    
   }
}

package home15;

public class SalesEmployee extends ColaEmployee {
     private int monthSales;
     private double royaltyRate;
     
    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.month == month) {
           return monthSales * royaltyRate + 100;
       }else {
           return monthSales * royaltyRate;
       }
   }

}

package home15;

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 home15;

public class TestCompany {
    public static void main(String[] args) {
        ColaEmployee[] cel = {
                new SalariedEmployee("拿固定工资的员工", 6, 30000),
                new HourlyEmployee("按小时拿工资的员工", 5, 100, 300),
                new SalesEmployee("销售人员", 3, 7000000, 0.3)
                };
        
        for (int i = 0; i < cel.length; i++) {
            new Company().getSalary(cel[i],7);
        }
}
}

• 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

package home1505;

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 Grape implements Fruit {
    public Grape() {
        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 Grape();
        } else {
            System.out.println("no");
        }
        return f;

    }
}

package home1505;

public class TestFruit {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Gardener g = new Gardener();
        g.create();
    }

}