第二册_第三章-北大青鸟-ACCP5.0_Java.docx

第二册 第二章1.public class test public static void main(string args) dog dog = new dog(欧欧,雪纳瑞);penguin pgn = new penguin(楠楠,q妹);master master = new master(王先生,1222);cat cat = new cat(加菲猫,黑色);master.feed(dog);master.feed(pgn);master.feed(cat);public abstract class pet protected string name = 无名氏;protected int health = 100;protected int love = 0;public pet(string name) = name;public string getname()return name;public void print()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+。);public abstract void eat();public static void main(string args) / todo auto-generated method stubpublic class master private string name ;private int money ;public master (string name,int money) = name;this.money = money;public void feed(dog dog)dog.eat();public void feed(penguin pgn)pgn.eat();public void feed(cat cat)cat.eat();public class dog extends petprivate string strain;public dog(string name,string strain)super(name);this.strain = strain;public void print()super.print();system.out.println(我是一只+this.strain+。);public void eat()super.health = super.health + 3;system.out.println(狗狗++吃饱啦！健康值增加3。);public class cat extends pet private string color;public cat (string name,string color) super(name); this.color = color;public void print()super.print();system.out.println(颜色是+this.color+。);public void eat()super.health = super.health+4;system.out.println(猫咪++吃饱了！健康值增加 4);public class penguin extends pet private string sex;public penguin (string name,string sex)super(name);this.sex = sex;public void print()super.print();system.out.println(性别是+this.sex+。);public void eat()super.health = super.health + 5;system.out.println(企鹅++吃饱啦！健康值增加5);2.public class test public static void main(string args) dog dog = new dog(欧欧,薛瑞娜);pet pgn = new penguin(楠楠,q妹);master master = new master(王先生,100);master.play(dog);master.play(pgn);public abstract class pet protected string name = 无名氏;protected int health = 100;protected int love = 0;public pet(string name) = name;public string getname()return name;public void print()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+。);public class master private string name ;private int money ;public master (string name,int money) = name;this.money = money;public void play(pet pet)if (pet instanceof dog)dog dog = (dog) pet;dog.catchingflydisc();else if (pet instanceof penguin)penguin pgn = (penguin) pet;pgn.swimming();public class penguin extends pet private string sex;public penguin (string name,string sex)super(name);this.sex = sex;public void print()super.print();system.out.println(性别是+this.sex+。);public void eat()super.health = super.health + 5;system.out.println(企鹅++吃饱啦！健康值增加5);public class dog extends petprivate string strain;public dog(string name,string strain)super(name);this.strain = strain;public void print()super.print();system.out.println(我是一只+this.strain+。);public void eat()super.health = super.health + 3;system.out.println(狗狗++吃饱啦！健康值增加3。);public class cat extends pet private string color;public cat (string name,string color) super(name); this.color = color;public void print()super.print();system.out.println(颜色是+this.color+。);public void eat()super.health = super.health+4;system.out.println(猫咪++吃饱了！健康值增加 4);3.import java.util.*;public class moto private string no = ;private string brand = 轿车;public moto()this.no = ;public moto(string no,string brand)this.no = no;this.brand = brand;public string getno()return no;public string getbrand()return brand;public void print()system.out.println(n车牌号是：+this.no+n车的类别是：+this.brand);public static void main(string args) scanner input = new scanner(system.in);system.out.println(欢迎进入汽车租赁系统：n请输入您要租赁的汽车类型（1.轿车 2.客车）：);int num = input.nextint();switch(num)case 1:system.out.println(请输入您要租的车的型号（1.别克商务舱gl8 2.宝马550i 3.别克林荫大道）：);int x = input.nextint();switch(x)case 1:car c= new car(别克商务舱gl8,k55555,600);c.print();break;case 2:car a= new car(宝马550i,k66666,500);a.print();break;case 3:car b= new car(别克林荫大道,k88888,300);b.print();break;break;case 2:system.out.println(请输入您要租的车的型号（1.小于16座 2.大于16座 ）：);int q = input.nextint();switch (q)case 1:bus a = new bus(蒙k66666,小于16,800);a.print();break;case 2:bus qq = new bus(蒙k66666,大于16,1400);qq.print();break;import java.util.*;class car extends motoprivate string type;/型号private int m;public car(string type,string no,int m)super(no,轿车);this.type = type ;this.m = m;public string gettype()return type;public void print()scanner input = new scanner(system.in);system.out.print(请输入您要租的天数：);int days = input.nextint();super.print();system.out.println(您要租的是一辆：+this.type+。n租金是：+m*days);import java.util.*;public class bus extends motoprivate string seat;private int m;public bus(string no,string seat,int m)super(no,客车);this.seat = seat;thi