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 dsadas;

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 dsadas;

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 dsadas;

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 dsadas;

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 dsadas;

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 dsadas;

public class test {
     /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub

        Colaemployee c1[] = { new Salariedemployee("ZHANGSAN", 3,3333),
                new Hourlyemployee("LIER",9, 70, 99),
                new Salesemployee("JINZI", 7, 999, 9) };
        for (int i = 0; i < c1.length; i++) {
            new Company().getSalary(c1[i], 12);

        }
    }

}

 

 

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 FSA;
    public interface Fruit {
        
    }
    class Apple implements Fruit {
        public Apple() {
            System.out.println("创建了一个苹果类的对象");
        }

    }

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

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

}
package FSA;

import java.util.Scanner;

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

        }

        public Fruit create() {
            
            Scanner input = new Scanner(System.in);
            String name = input.next();

            Fruit f = null;
            if (name.equals("苹果")) {
                f = new Apple();
            }
            if (name.equals("香蕉")) {
                f = new Banana();
            }
            if (name.equals("葡萄")) {
                f = new Grape();
            }
            return f;

    }

}