java实验三.docx

实验三2、用类封装一个类：银行卡类，要求实现以下方法：存钱、取钱、查询、转帐、消费。package com.sd;import java.util.Scanner;public class yinhang private int money;private Scanner sc=new Scanner(System.in);public yinhang(int money)this.money=money;public void cunqian()System.out.println(存钱金额是);int m;m=sc.nextInt();System.out.println(存钱金额是+m);money=money+m;System.out.println(当前银行卡钱数是+money);public void quqian()System.out.println(当前银行卡钱数是+money);System.out.println(取钱的金额是);int n;n=sc.nextInt();System.out.println(取钱的金额是+n);money=money-n;System.out.println(取钱后银行卡钱数是+money);public void chaxun()System.out.println(显示银行卡上的钱是+money);public void zhuanzhang()System.out.println(当前银行卡钱数是+money);System.out.println(转账的帐号是);int y;y=sc.nextInt();System.out.println(转账的帐号是+y);System.out.println(转账钱数是);int z;z=sc.nextInt();System.out.println(转账钱数是+z);money=money-z;System.out.println(转账后银行卡钱数是+money);public void xiaofei()System.out.println(当前银行卡钱数是+money);System.out.println(消费的金额是);int x;x=sc.nextInt();System.out.println(消费钱数是+x);money=money-x;System.out.println(消费后银行卡钱数是+money);public void help()System.out.println(请根据以下提示进行操作);System.out.println(0:查询。1:存钱。2:取钱。3:转账。4:消费。);public static void main(String args) / TODO Auto-generated method stub yinhang p=new yinhang(20000); p.help(); while(true) Scanner sc=new Scanner(System.in); int chose=sc.nextInt(); switch(chose) case 0: p.chaxun();break; case 1: p.cunqian(); break; case 2: p.quqian();break; case 3: p.zhuanzhang();break; case 4: p.xiaofei();break; default: System.out.println(输入错误，请重新输入); System.out.println(操作成功); 3、 封装3个类：一般信用卡类、金信用卡类、白金信用卡类，都继承银行类，要求实现：存钱、取钱、查询、转帐、消费。一般信用卡类：package com.sd;import java.util.Scanner;public class CreditCard extends yinhangpublic CreditCard()super(20000);private int jifen;private Scanner sc=new Scanner(System.in);public void quqian() System.out.println(手续费一次50元，最高可以取2000元);System.out.println(请输入要取得金额);int a=sc.nextInt();if(a2000)System.out.println(不在范围内，请重新输入);a=sc.nextInt();System.out.println(要取得金额是+a+请确认);System.out.println(输入金额确认好请输入yes继续);String C=sc.next();switch(C)case yes:System.out.println(输入成功);break;default :System.out.println(操作被取消);money=money-a-50;System.out.println(剩余的金额是+money);public void chaxun()System.out.println(当前可以透支的额度是+money);public void zhuanzhang()System.out.println(不能转账);public void xiaofei()jifen=(20000-money);System.out.println(当前的消费积分是+jifen);金卡类：package com.sd;import java.util.Scanner;public class GoldCard extends yinhangpublic GoldCard()super(20000);private float jifen;private Scanner sc=new Scanner(System.in);public void quqian() System.out.println(手续费一次20元，最高可以取2000元);System.out.println(请输入要取得金额);int a=sc.nextInt();if(a2000)System.out.println(不在范围内，请重新输入);a=sc.nextInt();System.out.println(要取得金额是+a+请确认);System.out.println(输入金额确认好请输入yes继续);String C=sc.next();switch(C)case yes:System.out.println(输入成功);break;default :System.out.println(操作被取消);money=money-a-20;System.out.println(剩余的金额是+money);public void chaxun()System.out.println(当前可以透支的额度是+money);public void zhuanzhang()System.out.println(不能转账);public void xiaofei()jifen=(20000-money)*1.25f;System.out.println(当前的消费积分是+jifen);白金卡类：package com.sd;import java.util.Scanner;public class PlatinumCreditCard extends yinhangpublic PlatinumCreditCard()super(20000);private float jifen;private Scanner sc=new Scanner(System.in);public void quqian() System.out.println(手续费一次0元，最高可以取5000元);System.out.println(请输入要取得金额);int a=sc.nextInt();if(a5000)System.out.println(不在范围内，请重新输入);a=sc.nextInt();System.out.println(要取得金额是+a+请确认);System.out.println(输入金额确认好请输入yes继续);String C=sc.next();switch(C)case yes:System.out.println(输入成功);break;default :System.out.println(操作被取消);money=money-a;System.out.println(剩余的金额是+money);public void chaxun()System.out.println(当前可以透支的额度是+money);public void zhuanzhang()System.out.println(不能转账);public void xiaofei()jifen=(20000-money)*1.5f;System.out.println(当前的消费积分是+jifen);实现类：package com.sd;import java.util.Scanner;public class TestCade public static void main(String args) int a;int b;Scanner sc=new Scanner(System.in);CreditCard card1=new CreditCard();GoldCard card2=new GoldCard();PlatinumCreditCard card3=new PlatinumCreditCard(); while(true)System.out.println(请输入要操作的卡的类型);String name1=sc.next();b=0;switch(name1)case 普通卡:while(b=0)System.out.println(请输入要进行的操作:0:查询。1:存钱。2:取钱。3:转账。4:消费。); a=sc.nextInt(); switch(a) case 0:card1.chaxun();break; case 1:card1.cunqian();break; case 2:card1.quqian();break; case 3:card1.zhuanzhang();break; case 4:card1.xiaofei();break; default:b=1;break; case 金卡: while(b=0) System.out.println(请输入要进行的操作:0:查询。1:存钱。2:取钱。3:转账。4:消费.); a=sc.nextInt(); switch(a) case 0:card2.chaxun();break; case 1:card2.cunqian();break; case 2:card2.quqian();break; case 3:card2.zhuanzhang();break; case 4:card2.xiaofei();break; default:b=1;break; case 白金卡:while(b=0) System.out.println(请输入要进行的操作:0:查询。1:存钱。2:取钱。3:转账。4:消费.); a=sc.nextInt(); switch(a) case 0:card3.chaxun();break; case 1:card3.cunqian();break; case 2:card3.quqian();break; case 3:card3.zhuanzhang();break; case 4:card3.xiaofei();break; default:b=1;break; default: System.out.println(输入错误请重新输入类型); name1=sc.next(); break; 运行结果：4、请编码实现动物世界的继承关系：- 动物（Animal）具有行为：进食（eat）、休息（sleep）- 动物包括：大象（Elephant），河马（Hippo）- 这些动物进食的行为各不相同（大象吃树叶，河马吃水草）；但休息的行为是一致的。请通过继承实现以上需求，并编写测试类AnimalTest进行测试。package com.sd;public class Animal public int size;public void sleep()System.out.println(动物要睡觉);public void eat()System.out.println(动物要进食);class Elephant extends Animalpublic void eat()System.out.println(大象吃树叶);class Hippo extends Animalpublic void eat()System.out.println(河马吃水草);实现：package com.sd;public class AnimalTest public static void main(String args) / TODO Auto-generated method stubElephant elephant=new Elephant();Hippo hippo=new Hippo();elephant.eat();elephant.sleep();hippo.eat();hippo.sleep();运行结果：5、请编码实现如下需求：- 乐器（Instrument）分为：钢琴(Piano)、小提琴(Violin)- 各种乐器的弹奏（ play ）方法各不相同。编写一个测试类InstrumentTest，要求：- 编写方法testPlay，对各种乐器进行弹奏测试。要依据乐器的不同，进行相应的弹奏。- 在main方法中进行测试。package com.sd;public class Instrument public Instrument()public void play()System.out.println(乐器弹奏);class Piano extends Instrumentpublic Piano()public void play()System.out.println(钢琴弹奏 肖邦 - 爱之梦);class Violin extends Instrumentpublic Violin()public void play()System.out.println(小提琴弹奏 爱的忧伤);class Cattle extends Instrument实现：package com.sd;import java.util.Scanner;public class InstrumentTest String type;Scanner sc=new Scanner(System.in);public void testPlay()System.out.println(请输入乐器名);type=sc.next();switch(type)case Piano:Piano piano=new Piano();piano.play();break;case Violin:Violin violin=new Violin();violin.play();break;default:System.out.println(输入的乐器不存在，请重新输入);break;public static void main(String args) / TODO Auto-generated method stubwhile(true)InstrumentTest text=new InstrumentTest();text.testPlay();运行结果：6、封装一个People类型基类，具有height和weight属性，具有speakHello、averageHeight、averageWeight功能。- 封装一个ChinaPeople类型是People的子类，新增chinaMartial功能，复写超类的speakHello、averageHeight、averageWeight功能。-封装一个AmericanPeople类型是People的子类，新增AmericanBoxing功能，复写超类的speakHello、averageHeight、averageWeight功能。- 用一个程序执行入口Test测试上述对象。package com.sd;public class People private String height=180cm; private String weight=70kg; public People() ; public void speakHello() System.out.println(Hello); public String averageHeight() return height; public String averageWeight() return weight; class ChinaPeople extends People private String height=175cm; private String weight=70kg; public ChinaPeople() ; public void speakHello() System.out.println(中国人问好方式：你好！); public String averageHeight() return height; public String averageWeight() return weight; public void chinaMartial() System.out.println(chinaMartial); class AmericanPeople extends People private String height=185cm; private String weight=75kg; public AmericanPeople() ; public void speakHello() System.out.println(美国人问好方式：Hello！); public String averageHeight() return height; public String averageWeight() return weight; public void AmericanBoxing() System.out.println(AmericanBoxing); 实现类：package com.sd;public class PeopleTest public static void main(String args) / TODO Auto-generated method stubString t;ChinaPeople china=new ChinaPeople();t=china.averageHeight();System.out.println(中国人的平均身高是+t);t=china.averageWeight();System.out.println(中国人的平均体重是+t);china.chinaMartial();china.speakHello();AmericanPeople american=new AmericanPeople();t=ame