抽象和封装继承和多态

1、package cn .jbit.epet.obj;/*宠物狗狗类。* author Lolly*/public class Dog String name =无名氏;/昵称，默认值是无名氏int health = 100; /健康值，默认值是100int love = 0; / 亲密度String strain =聪明的拉布拉多犬;/品种/*输出狗狗的信息。*/public void prin t() System.out.println(” 宠物的自白：n 我的名字叫+ + ，健康值是+ this.health + ，和主人的亲密度是 + this.love + ，我是

2、一只+ this.strain + 。);package cn .jbit.epet.obj;/*宠物企鹅。* author Lolly*/public class Penguin String name =无名氏;/ 昵称int health = 100; / 健康值int love = 0; / 亲密度String sex = Q仔;/ 性别/*输出企鹅的信息。*/public void prin t() System.out.println(” 宠物的自白：n 我的名字叫+ + ，健康值是+ this.health + ，和主人的亲密度是 + this.love +

3、，性别是+ this.sex + 。);package cn .jbit.epet.obj;import java.util.Sca nner;*领养宠物。* author Lolly*/public class Test public static void main( Stri ng args) Scanner in put = new Sca nn er(System.i n);System.out.pri ntln(欢迎您来到宠物店！);/ 1、输入宠物名称System.out.print(请输入要领养宠物的名字：);Stri ng n ame = in put .n ext();/

4、2、选择宠物类型System.out.print(请选择要领养的宠物类型：(1、狗狗2、企鹅); switch (in put. next In t() case 1:/ 2.1、如果是狗狗/ 2.1.1、选择狗狗品种System.out.print(请选择狗狗的品种：(1、聪明的拉布拉多犬+ 2、酷酷的雪娜瑞);Stri ng strain = n ull;if (in put .n extI nt() = 1) strain =聪明的拉布拉多犬; else strain =酷酷的雪娜瑞;/ 2.1.2、创建狗狗对象并赋值Dog dog = new Dog();dog .n ame = n

5、ame;dog.strain = strai n;/ 2.1.3、输出狗狗信息dog.pri nt();break;case 2:/ 2.2、如果是企鹅/ 2.2.1、选择企鹅性别System.out.print(请选择企鹅的性别：(1、Q仔2、Q妹); Stri ng sex = n ull;if (in put .n ext In t() = 1)sex = Q 仔;elsesex = Q 妹;/ 222、创建企鹅对象并赋值Penguin pgn = new Penguin(); pgn.n ame = n ame;pgn. sex = sex;/ 2.2.3、输出企鹅信息 pgn.pri

6、n t(); package cn .jbit.epet.c on sta nt;/*宠物企鹅类，使用静态常量*/ public class Penguin String name =无名氏;/ 昵称 int health = 100; / 健康值 int love = 0; / 亲密度 static final Stri ng SEX_MALE =C仔; static final Stri ng SEX_FEMALE=(妹; /static final Stri ng SEX_MALE =雄; /static final Stri ng SEX_FEMALE =雌; Stri ng sex

7、= SEX_MALE; 性别/*输出企鹅的信息。*/public void prin t() System.out.println(宠物的自白：n 我的名字叫+ + ，健康值是+ this.health+ ，和主人的亲密度是+ this.love + ，性别是+ this.sex + 。); package cn .jbit.epet.c on sta nt;/*测试静态常量的使用。* author Lolly*/public class Test public static void main( Stri ng args) Penguin pgn = nu II;pgn

8、= new Penguin();System.out.println(” 第一个企鹅的性别是+ pgn.sex + 。);pgn = new Penguin();pgn .sex = Pen gui n.SEX_FEMALE;System.out.println(” 第二个企鹅的性别是+ pgn.sex + 。);pgn = new Penguin();pgn .sex = Pen gui n. SEX_MALE;System.out.println(” 第三个企鹅的性别是+ pgn.sex + 。); package cn .jbit.epet.c on sta nt;/*宠物企鹅类，使用静

9、态常量*/ public class Penguin String name =无名氏;/ 昵称 int health = 100; / 健康值 int love = 0; / 亲密度/ static final Stri ng SEX_MALE =Q仔; / static final Stri ng SEX_FEMALE=(妹; static final Stri ng SEX_MALE =雄； static final Stri ng SEX_FEMALE =雌； Stri ng sex = SEX_MALE; 性别/*输出企鹅的信息。*/public void prin t() Syst

10、em.out.println(宠物的自白：n 我的名字叫+ + ，健康值是+ this.health+ ，和主人的亲密度是+ this.love + ，性别是+ this.sex + 。); package cn .jbit.epet.c on sta nt;/*测试静态常量的使用author Lolly*/public class Test public static void main( Stri ng args) Penguin pgn = nu II;pgn = new Penguin();System.out.println(” 第一个企鹅的性别是+ pgn.se

11、x + 。);pgn = new Penguin();pgn .sex = Pen gui n.SEX_FEMALE;System.out.println(” 第二个企鹅的性别是+ pgn.sex + 。);pgn = new Penguin();pgn .sex = Pen gui n. SEX_MALE;System.out.println(” 第三个企鹅的性别是+ pgn.sex + 。); package cn .jbit.epet.con structor;/*宠物企鹅类，测试无参构造方法。* author Lolly*/public class Penguin String nam

12、e =无名氏;/ 昵称 int health = 100; / 健康值 int love = 0; / 亲密度String sex = Q仔;/ 性别/*无参构造方法。*/public Penguin() n ame =楠楠;love = 20;sex = Q 妹;System.out.println(执行构造方法);/*输出企鹅的信息。*/public void prin t() System.out.println(宠物的自白：n 我的名字叫+ + ，健康值是+ this.health + ，和主人的亲密度是 + this.love + ，性别是+ this.sex +

13、 。);/*测试无参构造方法的使用。*/public static void main( Stri ng args) Penguin pgn = nu II;pgn = new Penguin(); pg n.pri nt(); package cn .jbit.epet.con structor;/*宠物企鹅类，指定多个构造方法。* author Lolly*/public class Penguin String name =无名氏;/ 昵称 int health = 100; / 健康值 int love = 0; / 亲密度String sex = Q仔;/ 性别/*无参构造方法。*/

14、public Penguin() n ame =楠楠;love = 20; sex = Q 妹;System.out.println(执行构造方法);/*两个参数构造方法。*/public Pen gui n( Stri ng n ame, String sex) this. name = n ame;this.sex = sex;/*四个参数构造方法。*/public Penguin(String name, int health, int love, String sex) this. name = n ame;this.health = health;this .love = love;

15、 this.sex = sex;/*输出企鹅的信息。*/public void prin t() System.out.println(宠物的自白：n 我的名字叫+ + ，健康值是+ this.health + ，和主人的亲密度是 + this.love + ，性别是+ this.sex + 。);/*测试构造方法的使用。*/public static void main( Stri ng args) Penguin pgn=n ull;pgn = new Penguin(); pg n.pri nt();pgn = new Pen gui n(亚亚,企鹅); pg n.p

16、ri nt();pgn = new Penguin(美美,80, 20, Q 仔); pg n.pri nt(); package cn .jbit.epet.e neap;/*宠物狗狗类，使用权限修饰符 private和public进行封装。* author Lolly*/class Dog private String name =无名氏;/ 昵称private int health = 100; / 健康值private int love = 0; / 亲密度private String strain =聪明的拉布拉多犬;/品种 /*读取狗狗昵称。* return 昵称*/public

17、Stri ng getName() return n ame;/指定狗狗亲密度。* param love 亲密度*/public void setLove(i nt love) this .love = love;/*读取狗狗品种。* return 品种 */*指定狗狗昵称。* param name 昵称*/public void setName(String name) this. name = n ame;/*读取狗狗健康值。* return健康值*/public int getHealth() retur n health;/*指定狗狗健康值，对健康值范围进行判断。* param hea

18、lth 健康值*/public void setHealth(i nt health) if (health 100 | health = 100) System.out.println(”狗狗需要多运动呀！); else health = health + 3;System.out.println(狗狗吃饱饭了！);/*通过玩游戏增加与主人亲密度，减少健康值。*/public void play() if (health = 100) System.out.println(”狗狗需要多运动呀！); else health = health + 3;System.out.println(狗狗吃

19、饱饭了！);/读取狗狗亲密度。* return亲密度*/public int getLove() return love;/*读取狗狗品种。* return 品种 */*通过玩游戏增加与主人亲密度，减少健康值。*/public void play() if (health 60) System.out.println(” 狗狗生病了！); else System.out.println(”狗狗正在和主人玩耍。); health = health - 10;love = love + 5;/*读取狗狗昵称。* return 昵称*/public Stri ng getName() return n ame;/*读取狗狗健康值。* return健康值*/public int getHealth() retur n health;/*