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 text; 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 double getSalary(int month){ return 0; } } package text; public class SalariedEmployee extends ColaEmployee { int money; public SalariedEmployee() { super(); } public SalariedEmployee(String name,int month,int money) { super(name,month); this.money = money; } public double getSalary(int month){ if(super.month==month){ return money+100; }else{ return money; } } } package text; public class HourlyEmployee extends ColaEmployee{ int hmoney; int mday; public HourlyEmployee(){ super(); } public HourlyEmployee(String name,int month,int hmoney, int mday) { super(); this.hmoney = hmoney; this.mday = mday; } public double getSalary(int month){ if(super.month==month){ if(mday>160){ return hmoney*160*(mday-160)*1.5+100; }else{ return hmoney * mday + 100; } }else{ if(mday>160){ return hmoney*160+(mday-160)*1.5; }else{ return hmoney*mday; } } } } package text; public class SalesEmployee extends ColaEmployee { int monthlysales; double royaltyrate; public SalesEmployee(String name, int month, int monthlysales, double royaltyrate) { super(); this.monthlysales = monthlysales; this.royaltyrate = royaltyrate; } public double getSalary(int month){ if(super.month==month){ return monthlysales*royaltyrate+100; }else{ return monthlysales*royaltyrate; } } } package text; public class Copany extends ColaEmployee { public void getSalary(ColaEmployee c,int month){ System.out.println(c.name+"在"+month+"月的月薪为"+c.getSalary(month)+"元"); } } package text; public class Testcompany { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub ColaEmployee c1[]={new SalariedEmployee("salare",4,70000), new HourlyEmployee("hourlye",4,200,30), new SalesEmployee("salese",4,17000,0.7) }; for (int i = 0; i < c1.length; i++) { new Copany().getSalary(c1[i], 4); } } }
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 text; 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 text; public class textfruit { public static void main(String[] args) { Gardener g = new Gardener(); g.create(); } }