JAVA第十五次作业

1.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 packagee;

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 packagee;

public class SalariedEmployee extends ColaEmployee{
    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 packagee;

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

    public HourlyEmployee() {
        super();
    }

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


package packagee;

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



package packagee;

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 packagee;

public class TestCompany {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        ColaEmployee c[] = { new SalariedEmployee("李华", 5, 1000),
                new HourlyEmployee("小明", 4, 50, 100),
                new SalesEmployee("小刚", 2, 22000,0.5) };
        for (int i = 0; i < c.length; i++) {
            new Company().getSalary(c[i], 5);
        }

    }

}

 

 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‖);

                                            }

                               }

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 packagee;

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

}



package packagee;

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

}



package packagee;

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

}




package packagee;

import java.util.Scanner;

public 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 packagee;
import java.util.Scanner;
public interface Fruit {

}






package packagee;

public class Test {

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

    }

}