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
出数组中每个员工当月的工资。

package cola;

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 cola;

public class SalariedEmployee extends ColaEmployee {
    private double salary;

    public SalariedEmployee(double salary) {
        super();
        this.salary = salary;
    }

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

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

}

package cola;

public class SalesEmployee extends ColaEmployee{
    protected int yuexiaoshou;
    protected double tuchenglv;
    public SalesEmployee() {
        super();
    }
    public SalesEmployee(String name, int month,int yuexiaoshou, double tuchenglv) {
        super(name,month);
        this.yuexiaoshou = yuexiaoshou;
        this.tuchenglv = tuchenglv;
    }
    public double getSalary(int month){
        if(super.month==month){
            return yuexiaoshou*tuchenglv+100;
        }else{
            return yuexiaoshou*tuchenglv;
        }
    }
}

package cola;

public class HourlyEmployee extends ColaEmployee {
    protected int hour;
    protected int hoursalary;

    public HourlyEmployee() {
        super();
    }

    public HourlyEmployee(String name, int month, int hour, int hoursalary) {
        super(name, month);
        this.hour = hour;
        this.hoursalary = hoursalary;
    }

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

}

package cola;

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 cola;

public class TestCompany {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        ColaEmployee c1[] = { new SalariedEmployee("a", 11, 20000),
                new HourlyEmployee("b", 6, 200, 200),
                new SalesEmployee("c", 5, 330000, 0.5) };
        for (int i = 0; i < c1.length; i++) {
            new Company().getSalary(c1[i], 5);
        }

    }

}

 

 

课后作业
• 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 jiekou;

import java.util.Scanner;

public interface Fruit {
}

class apple implements Fruit {
    public apple() {
        System.out.println("创建了一个苹果类");
    }
}

class banana implements Fruit {
    public banana() {
        System.out.println("创建了一个香蕉类");
    }
}

class grape implements Fruit {
    public grape() {
        System.out.println("创建了一个葡萄类");
    }
}

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 jiekou;

public class Test {

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

}