第15周作业java
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 {
protected String name;
protected int month;
public ColaEmployee() {
super();
}
public double getSalary(int month) {
return 0;
}
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 class SalariedEmployee extends ColaEmployee{
protected double yuexin;
public SalariedEmployee() {
super();
}
public SalariedEmployee(String name, int month, double yuexin) {
super(name, month);
this.yuexin = yuexin;
}
public double getSalary(int month) {
if (super.month == month) {
return yuexin + 100;
} else {
return yuexin;
}
}
}
public class HourlyEmployee extends ColaEmployee {
protected int gongzi;
protected int xiaoshi;
public HourlyEmployee() {
super();
}
public HourlyEmployee(String name, int month, int gongzi, int xiaoshi) {
super(name, month);
this.gongzi = gongzi;
this.xiaoshi = xiaoshi;
}
public double getSalary(int month) {
if (super.month == month) {
if (xiaoshi > 160) {
return gongzi * 160 + gongzi * (xiaoshi - 160) * 1.5 + 100;
} else {
return gongzi * xiaoshi + 100;
}
} else {
if (xiaoshi > 160) {
return gongzi * 160 + gongzi * (xiaoshi - 160) * 1.5;
} else {
return gongzi * xiaoshi;
}
}
}
}
public class SalesEmployee extends ColaEmployee {
protected int yuexiao;
protected double ticheng;
public SalesEmployee() {
super();
}
public SalesEmployee(String name, int month, int yuexiao, double ticheng) {
super(name, month);
this.yuexiao = yuexiao;
this.ticheng = ticheng;
}
public double getSalary(int month) {
if (super.month == month) {
return yuexiao * ticheng + 100;
} else {
return yuexiao * ticheng;
}
}
}
public class Company {
public void getSalary(ColaEmployee a, int month){
System.out.println(a.name + "在" + month + "月的月薪为" + a.getSalary(month)
+ "元");
}
}
public class TestCompany {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
ColaEmployee a1[] = { new SalariedEmployee("停停", 10, 30000),
new HourlyEmployee("美美", 4, 240, 120),
new SalesEmployee("张三", 9, 350000, 3.0) };
for (int i = 0; i < a1.length; i++) {
new Company().getSalary(a1[i],8);
}
}
}
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
import java.util.Scanner;
public interface Fruit {
}
class Apple implements Fruit{
public Apple(){
System.out.println("创造了一个苹果类的对象");
}
}
class Banana implements Fruit{
public Banana(){
System.out.println("创造了一个香蕉类的对象");
}
}
class Grape implements Fruit{
public Grape(){
System.out.println("创造了一个葡萄类的对象");
}
}
public class Gardener {
public Fruit create() {
Scanner input = new Scanner(System.in);
String name = input.next();
Fruit f=null;
if (name.equals("苹果")) {
f = new Apple();
}
if (name.equals("香蕉")) {
f = new Banana();
}
if (name.equals("葡萄")) {
f = new Grape();
}
return f;
}
public static void main(String[] args){
Gardener a=new Gardener();
a.create();
}
}
