第十五次Java作业

Posted 2021-06-18 张劲

4、 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
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 zj;

public abstract class ColaEmployee {
    String Ename;
    int Emonth;
    public abstract double getSalary(int mouth);
    public String getEname() {
        return Ename;
    }
    public void setEname(String ename) {
        Ename = ename;
    }
    public int getEmouth() {
        return Emonth;
    }
    public void setEmouth(int emonth) {
        Emonth = emonth;
    }
    public ColaEmployee(String ename, int emonth) {
        super();
        Ename = ename;
        Emonth = emonth;
    }    
    
}

package zj;

public class SalariedEmployee extends ColaEmployee {
    double MSalary;
    public SalariedEmployee(String ename, int emonth, double mSalary) {
        super(ename, emonth);
        MSalary = mSalary;
    }
    public double getSalary(int month) {
        if(month==super.Emonth){
            return (MSalary+100);
         }else{
            return MSalary;
        }
    }
}

package zj;

public class HourlyEmployee extends ColaEmployee{
    double HSalary;
    double MHour;
    
    public HourlyEmployee(String ename, int emonth, double hSalary, double mHour) {
        super(ename, emonth);
        HSalary = hSalary;
        MHour = mHour;
    }

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

package zj;

public class SalesEmployee extends ColaEmployee{
    double Mxiaoshoue;
    double Tichenglv;
    public SalesEmployee(String ename, int emonth, double mxiaoshoue,
            double tichenglv) {
        super(ename, emonth);
        Mxiaoshoue = mxiaoshoue;
        this.Tichenglv = tichenglv;
    }
    public double getSalary(int month){
        if(super.Emonth==month){
            return Mxiaoshoue*Tichenglv+100;
        }else{
            return Mxiaoshoue*Tichenglv;
        }
    }
}

package zj;

public class Company {
    public void getSalary(ColaEmployee c,int month){
        System.out.println(c.Ename+month+"月的月薪为"+c.getSalary(month)+"元");
        
        
    }
}

package zj;

public class TestCompany {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
     ColaEmployee c[] = { 
               new SalariedEmployee("小杨", 2, 2000),
               new HourlyEmployee("小孟", 10, 120, 100),
               new SalesEmployee("小明", 3, 20000, 0.66) };
            for (int i = 0; i < c.length; i++) {
                new Company().getSalary(c[i], 2);
            }
        }
}

 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 zj;

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

package zj;

public class TestFruit {

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

}