Java第十五周作业

Posted 2021-06-16 吴宁

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。

 

public class ColaEmployee{
    private String name;
    private int 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 ColaEmployee (String name, int month) {
        this.month = month;
        this.name = name;
    }

    double getSalary (int m) {
        int a;
        if (month == m) {
            a = 100;
        } else {
            a = 0;
        }
        return a;
    }

}

import java.util.Scanner;

public class Company {

    int m = new Scanner(System.in).nextInt();

    void show(ColaEmployee em) {
        System.out.println(em.getName() + "的工资是" + em.getSalary(m));
    }
}

public class HourlyEmployee extends ColaEmployee {
    private int time;
    private double hoursal;

    public HourlyEmployee(String name, int month, int time, double hoursal) {
        super(name, month);
        this.hoursal = hoursal;
        this.time = time;
    }

    double getSalary(int m) {
        double sal;
        if (time <= 160) {
            sal = time * hoursal;
        } else {
            sal = 160 * hoursal + (time - 160) * 1.5 * hoursal;
        }
        return sal + super.getSalary(m);
    }

}

public class SalariedEmployee extends ColaEmployee {
    private int monthsala;

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

    double getSalary(int m) {
        return monthsala + super.getSalary(m);
    }

}

public class SalesEmployee extends ColaEmployee {
    private double ysh;
    private double tc;

    public SalesEmployee(String name, int month, double ysh, double tc) {
        super(name, month);
        this.tc = tc;
        this.ysh = ysh;
    }

    double getSalary(int m) {
        return tc * ysh + super.getSalary(m);
    }

}

public class test {
    public static void main(String[] args) {
        ColaEmployee[] ColaEmployee = new ColaEmployee[3];
        ColaEmployee[0] = new SalariedEmployee("固定员工", 10, 10000);
        ColaEmployee[1] = new HourlyEmployee("小时员工", 3, 170, 13);
        ColaEmployee[2] = new SalesEmployee("销售", 7, 50000, 0.23);
        Company company = new Company();
        for (ColaEmployee i : ColaEmployee) {
            company.show(i);
        }

    }
}

 

 

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 hwk1;
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 Putao implements Fruit {
    public Putao() {
        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 Putao();
        } else {
           System.out.println("不会种");
        }
        return f;

    }
}

package hwk2;

public class textfruit {
    public static void main(String[] args) {
        Gardener g = new Gardener();
            g.create();
    
 }

}