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 java152;

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 java152;

public class SalariedEmployee extends ColaEmployee{
	double monSalary;
    
    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 java152;

public class HourlyEmployee extends ColaEmployee{
	int hourSalary;
    int hourNum;

    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 java152;

public class SalesEmployee extends ColaEmployee {
	int monthSales;
    double royaltyRate;

    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 java152;

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 java152;

public class TestCompany {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		ColaEmployee[] cel = {
                new SalariedEmployee("salariedEmployee", 6, 30000),
                new HourlyEmployee("hourlyEmployee", 5, 100, 300),
                new SalesEmployee("salesEmployee", 3, 500000, 0.3) 
        };
       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‖);
}
• }
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 java153;

import java.util.Scanner;
 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");
     }
 }
public 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;

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

}