JAVA第15周
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 homework1; public class TestCompany { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub ColaEmployee c1[] = { new SalariedEmployee("张三", 2, 300), new HourlyEmployee("李四", 7, 300, 220), new SalesEmployee("王五", 4, 3500, 1.0) }; for (int i = 0; i < c1.length; i++) { new Company().getSalary(c1[i], 5); } } }
package homework1; 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 homework1; public class HourlyEmployee extends ColaEmployee { protected int gongzi; protected int xiaoshishu; public HourlyEmployee(String name, int month, int gongzi, int xiaoshishu) { super(name, month); this.gongzi = gongzi; this.xiaoshishu = xiaoshishu; } public HourlyEmployee() { super(); } public double getSalary(int month) { if (super.month == month) { if (xiaoshishu > 160) { return gongzi * 160 + gongzi * (xiaoshishu - 160) * 1.5 + 100; } else { return gongzi * xiaoshishu + 100; } } else { if (xiaoshishu > 160) { return gongzi * 160 + gongzi * (xiaoshishu - 160) * 1.5; } else { return gongzi * xiaoshishu; } } } /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub } }
package homework1; public class SalariedEmployee extends ColaEmployee { protected double yuexin; public SalariedEmployee(String name, int month, double yuexin) { super(name, month); this.yuexin = yuexin; } public SalariedEmployee() { super(); } public double getSalary(int month) { if (super.month == month) { return yuexin + 100; } else { return yuexin; } } /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub } }
package homework1; public class SalesEmployee extends ColaEmployee{ protected int mxiaoshoue; protected double tichenglv; public SalesEmployee(String name, int month, int mxiaoshoue, double tichenglv) { super(name, month); this.mxiaoshoue = mxiaoshoue; this.tichenglv = tichenglv; } public SalesEmployee() { super(); } public double getSalary(int month) { if (super.month == month) { return mxiaoshoue * tichenglv + 100; } else { return mxiaoshoue * tichenglv; } } /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub } }
package homework1; public class TestCompany { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub ColaEmployee c1[] = { new SalariedEmployee("张三", 2, 300), new HourlyEmployee("李四", 7, 300, 220), new SalesEmployee("王五", 4, 3500, 1.0) }; for (int i = 0; i < c1.length; i++) { new Company().getSalary(c1[i], 5); } } }
5、
package homework2; 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 Grape implements Fruit { public Grape() { 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 Grape(); } else { System.out.println("no"); } return f; } }
package homework2; public class Test { public static void main(String[] args) { // TODO Auto-generated method stub Gardener g = new Gardener(); g.create(); } }