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 com.gd;

public class Colaemployee {
protected String name;
protected int month;
public Colaemployee(String name, int month) {
super();
this.name = name;
this.month = month;
}
public Colaemployee() {
super();

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

}

package com.gd;

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 com.gd;

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 com.gd;

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 com.gd;

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 com.gd;

public class Testcompany {

/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
Colaemployee c1[] = { new Salariedemployee("salare", 7, 123456),
new Hourlyemployee("hourlye", 3, 89, 500),
new Salesemployee("salese", 6, 300000, 0.8) };
for (int i = 0; i < c1.length; i++) {
new company().getSalary(c1[i], 5);

}

}

}

 

 

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：

package com.gd.dd;

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 com.gd.dd;

public class text {

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

Gardener g = new Gardener();
g.create();


}

}