Java第十五次作业

Posted 2021-06-17 飞七

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。

public class ColaEmployee {
     String name;
        int mouth;

        public ColaEmployee(String name, int mouth) {
            this.name = name;
            this.mouth = mouth;
        }



        public String getName() {
            return name;
        }

        public int getMouth() {
            return mouth;
        }

        public double getSalary(int mouth){
            return 0;
        }

}

public class SalariedEmployee extends ColaEmployee {
     double salary;

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

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

}

 

public class HourlyEmployee extends ColaEmployee {
    double salaryHour;
    int hour;

    public HourlyEmployee(String name,int mouth,double salaryHour,int hour){
        super(name,mouth);
        this.salaryHour = salaryHour;
        this.hour = hour;
    }

    public double getSalary(int mouth) {
        if(this.mouth == mouth){
            if(hour<=160){
                return salaryHour*hour+100;
            }else{
                return 160*salaryHour + (hour - 160)*1.5*salaryHour + 100;
            }
        }else{
            if(hour<=160){
                return salaryHour*hour;
            }else{
                return 160*salaryHour + (hour - 160)*1.5*salaryHour;
            }
        }
    }

}

public class SalesEmployee extends ColaEmployee {
    double sales;
    double rate;

    public SalesEmployee(String name,int mouth,double sales,double rate){
        super(name,mouth);
        this.sales = sales;
        this.rate = rate;
    }

    public double getSalary(int mouth) {
        if(this.mouth == mouth){
            return sales * rate + 100;
        }else{
            return sales * rate + 100;
        }
    }
}

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

public class Test {
    public static void main(String[] args) {
        ColaEmployee[] c = {new SalariedEmployee("张三", 1, 2000),
                            new HourlyEmployee("李四", 2, 15,200),
                            new SalesEmployee("王五",3,400000,0.01)};

        for(int i =0;i<c.length;i++ ){
            new Company().getSalary(c[i], 1);
        }
    }
}

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‖);

                                            }

                               }

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

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");

    }

}

import java.util.Scanner;

class Gardener {
    Fruit Create(){
        System.out.println("请输入需要创建的对象名……");
        Scanner in = new Scanner (System.in);
        String f = in.next();

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

public class Test {
    public static void main(String[] args) {
        new Gardener().Create();
    }
}