實(shí)驗(yàn)二-面向?qū)ο蟪绦蛟O(shè)計(jì)

1、精選優(yōu)質(zhì)文檔-傾情為你奉上EXP2課題(項(xiàng)目)名稱: 實(shí)驗(yàn)二 面向?qū)ο蟪绦蛟O(shè)計(jì)計(jì)劃學(xué)時(shí):2 實(shí)驗(yàn)類型: 1.演示性 2.驗(yàn)證性 3.綜合性 4.設(shè)計(jì)性 5.其它授課日期: 年 月 日 第 周 星期 第 節(jié)實(shí)驗(yàn)?zāi)康?. 驗(yàn)證面向?qū)ο笕筇匦?. 學(xué)習(xí)封裝的實(shí)現(xiàn)3. 學(xué)習(xí)繼承的實(shí)現(xiàn)4. 編寫(xiě)多態(tài)實(shí)例5. 學(xué)習(xí)抽象類的使用6. 學(xué)習(xí)接口的使用實(shí)驗(yàn)要求1. 掌握封裝的實(shí)現(xiàn)方法2. 掌握繼承的編程方式和思想3. 理解多態(tài)現(xiàn)象4. 掌握抽象類和接口的使用實(shí)驗(yàn)內(nèi)容與步驟1. 封裝的實(shí)現(xiàn)（1） 編寫(xiě)程序模擬個(gè)人銀行賬號(hào)類?？紤]個(gè)人銀行的特點(diǎn)，建立類模型（注意屬性和方法的訪問(wèn)權(quán)限修飾符）參考代碼public c

2、lass BankAccount private String accountID;private String password;private int balance;public BankAccount(String accountID,String password,String operator)this.accountID=accountID;this.password=password;this.balance=0;System.out.println("Create a BankAccount");System.out.println("Accou

3、ntID:"+this.accountID);System.out.println("Current Balance:"+this.balance);System.out.println("Operator:"+operator);System.out.println("Save Account info to Database");public void queryBalance(String password)if(password=this.password)System.out.println("Passw

4、ord OK");System.out.println("Current Account Balance:"+this.balance);elseSystem.out.println("Password Erro");public void changePassword(String oldPassword,String newPassword)if(oldPassword=this.password)System.out.println("Password OK");this.password=newPassword;Sy

5、stem.out.println("Change Passord OK");elseSystem.out.println("Password Erro");public void deposit(int money,String operator)this.balance+=money;System.out.println("add balance OK.Operator:"+operator);System.out.println("Save Account change to database");public

6、 void withdraw(String password,int money,String operator)if(password=this.password)System.out.println("Password OK");if(this.balance>money)this.balance-=money;System.out.println("withdraw:"+money+" ok, Operator:"+operator );System.out.println("Current Account Ba

7、lance:"+this.balance);System.out.println("Save Account change to database");elseSystem.out.println("withdraw:"+money+" erro. Because of not enough balance");elseSystem.out.println("Password Erro");（2） 編寫(xiě)測(cè)試類，完成如下（1）中類方法的測(cè)試實(shí)現(xiàn)如下業(yè)務(wù)：開(kāi)戶，存款100，查詢余額，取款50，查詢余額，取款2

8、00，查詢余額public class Test1 public static void main(String args) BankAccount bankaccount =new BankAccount("", "", "TOM");bankaccount.queryBalance("");bankaccount.changePassword("","");bankaccount.deposit(100,"TOM");bankaccount.withd

9、raw("",50,"TOM");2. 繼承的實(shí)現(xiàn)（1） 按如下類圖編寫(xiě)代碼 參考代碼class Person String id;String name;String age;public void sleep() System.out.println("I am Person,I am sleeping");public void eat() System.out.println("I am Person,I am eating");class Student extends Person String sno

10、;public void study() System.out.println("I am Student,I am studying");class Teacher extends Person String tid;public void tech() System.out.println("I am Student,I am taching");（2） 編寫(xiě)測(cè)試類并創(chuàng)建main()方法，完成如下操作A 分別創(chuàng)建Person、Student、Teacher對(duì)象，完成屬性和每個(gè)方法的調(diào)用測(cè)試B 在Student和Teacher中完成eat()方法的重寫(xiě)

11、C 編寫(xiě)類型轉(zhuǎn)化示例（向上類型轉(zhuǎn)化、向下類型轉(zhuǎn)化）3. 多態(tài)現(xiàn)象 在完成（2）中Student、Teacher類eat()方法重寫(xiě)后，在測(cè)試類中編寫(xiě)如下代碼并在main()方法中調(diào)用static void askAllToEat(Person ps) for(int i=0;i<ps.length;i+) psi.eat(); psi.sleep(); 從以上代碼中體會(huì)多態(tài)現(xiàn)象。public class Test2 public static void main(String args) Person person = new Person();person.sleep();person

12、.eat();Student student = new Student();student.sleep();student.eat();student.study();Teacher teacher = new Teacher();teacher.sleep();teacher.eat();teacher.tech();static void askAllToEat(Person ps) for (int i = 0; i < ps.length; i+) psi.eat();psi.sleep();4. 抽象類的使用編寫(xiě)以上類圖所示類，并編寫(xiě)測(cè)試代碼測(cè)試抽象類的使用參考代碼abstr

13、act class Printerprivate String printerType;Printer(String printerType)this.printerType=printerType;abstract void print(String txt);void showMyType()System.out.println("My Type is:"+printerType);class InkPrinter extends PrinterInkPrinter(String inkPrinterType)super(inkPrinterType);void pri

14、nt(String txt)System.out.println("I am Ink Printer");System.out.println("Start to Print:"+txt);class LasertPrinter extends PrinterLasertPrinter(String laserPrinterType)super(laserPrinterType);void print(String txt)System.out.println("I am Lasert Printer");System.out.pri

15、ntln("Start to Print:"+txt);編寫(xiě)測(cè)試類及main() 方法，完成如下操作A. 創(chuàng)建Printer,InkPrinter,LaserPrinter類的對(duì)象。B. 設(shè)計(jì)并編寫(xiě)演示多態(tài)現(xiàn)象的代碼5. 接口的使用編寫(xiě)以上類圖的代碼，并編寫(xiě)測(cè)試類測(cè)試接口的使用參考代碼interface IScanvoid scan();abstract class Printerprivate String printerType;Printer(String printerType)this.printerType=printerType;abstract void p

16、rint(String txt);void showMyType()System.out.println("My Type is:"+printerType);abstract class InkPrinter extends PrinterInkPrinter(String inkPrinterType)super(inkPrinterType);void print(String txt)System.out.println("I am Ink Printer");System.out.println("Start to Print:"+txt);class LasertPrinter extends PrinterLasert