一:
public class Pet {
private String name;
private int health;
private int love;
PetShop(String name,int health,int love){
this.name=name;
this.health=health;
this.love=love;
}
public String getName(){
return name;
}
public void setName(String name){
this.name=name;
}
public int getHealth(){
return health;
} public void setHealth(int health){ if(health>100||health<0) { System.out.println("健康值应在0到100之间,默认值是40");} else this.health=health; } public int getLove(){ return love; } public void setLove(int love){ this.love=love; } public void speak(){ System.out.println("Hi,主人,我的名字是"+name+"我的健康值是"+health+"我和主人的亲密度是" +love); }
public void Petshop
public static void main(Sting[]args)
{Scanner input =new Scanner(System.in);
System.outprintln("欢迎来到宠物店");
//1.输入宠物名称
System.out.println("请输入要领养宠物的名字:");
String name=input.next();
//2.选择宠物
System.out.prinln("请输入要领养的宠物类型:(1.狗狗2.企鹅)");
swith(input.nextInt())
{ case 1:
// 2.1 如果是狗狗
//2.1.1 选择狗狗的品种
System.out.println(“请选择狗狗的品种:(1.聪明的拉布拉多犬” + “ 2.酷酷的雪纳瑞)”);
String strain = null;
if(input.nextInt() == 1){
strain = ”聪明的拉布拉多犬”;
} else {
strain = “酷酷的雪纳瑞”;
}
// 2.1.2 创建狗狗对象并赋值
Dog dog = new Dog();
dog.name = name;
dog.strain = strain;
// 2.1.3 输入狗狗信息
dog.print();
break;
case 2:
//2.2 如果是企鹅
//2.2.1 选择企鹅性别
System.out.println(“请选择企鹅的性别:(1.Q仔 2.Q妹)”);
String sex = null;
if(input.nextInt() == 1)
sex = ” Q仔”;
else
sex = “Q妹”
//2.2.2 创建企鹅对象并赋值
Penguin pgn = new Penguin();
pgn.name = name;
pgn.sex = sex;
//2.2.3 输出企鹅信息
pgn.print();
}
}
}
class Dog extends Pet{private String breed;
public Dog(String name,int health,int love,Strint breed)
{super(name,health,love);
this.breed=breed;}
public String getBreed(){
return breed;
}
public void setBreed(String breed){
this.breed=breed;
}
public void speak(){
super.speak();
System.out.println("我的品种是"+breed);
}
}
class Penguin extends pet
{private String sex;
public Penguin(String name,int health,int love,Strint breed)
{super(name,health,love);
this.sex=sex;}
public String getsex(){
return sex;
}
public void setsex(String sex){
this.sex=sex;
}
public void speak(){
super.speak();
System.out.println("我的性别是"+sex);
}
}
又好几天没有写博客啦,尽量以后少打游戏,多抽点时间写点文章。
这篇代码主要是一个宠物店类,主要用啦面向对象中继承的思想。先定义啦一个基类pet类,Dog类和pengguin类继承啦petl类。这是学java以来第一次用到面向对象的思想。并学到啦与c++不同的地方。继承的关键字extends,和supper()。
二:老师给的代码如下:
petshop
package jsj.java.exam.test05;
import java.util.Scanner;
public class PetShop {
public static void main(String[] args) {
System.out.println("欢迎来到宠物商店");
System.out.println("请输入要领养的宠物的名字");
Scanner input=new Scanner(System.in);
String name=input.next();
System.out.println("请输入你要领养的宠物的类型:(1 狗狗 2 企鹅)");
int type=input.nextInt();
Master master=new Master();
switch(type){
case 1:System.out.println("请输入狗的品种(1 聪明的拉布拉多犬 2苦苦的雪纳瑞)");
int breed=input.nextInt();
System.out.println("请输入狗的健康值");
int health=input.nextInt();
String s="";
if(breed==1){
s="聪明的拉布拉多犬";
}else{
s="苦苦的雪纳瑞";
}
Dog dog=new Dog(name,s,health,20);
System.out.println("喂养前:");
dog.speak();
master.feed(dog);
System.out.println("喂养后:");
dog.speak();
master.play(dog);
System.out.println("与主人玩耍后");
dog.speak();
break;
case 2:
System.out.println("请输入企鹅的性别(1Q仔 2Q妹)");
int sex=input.nextInt();
System.out.println("请输入企鹅得健康值");
health=input.nextInt();
s="";
if(sex==1){
s="Q仔";
}else{
s="Q妹";
}
Penguin penguin=new Penguin(name, s, health, 30);
penguin.speak();
master.feed(penguin);
System.out.println("喂养后:");
penguin.speak();
master.play(penguin);
System.out.println("与主人玩耍后");
penguin.speak();
}
}
}
pet.java
package jsj.java.exam.test05;
public abstract class Pet {
protected String name;
protected int health;
protected int love;
/**
*
* @param name
* @param health
* @param love
*/
public Pet(String name, int health, int love) {
super();
this.name = name;
this.health = health;
this.love = love;
}
/**
* 修改名字
* @param newName
*/
public void setName(String newName) {
name = newName;
}
/**
* 取得名字
*
* @return
*/
public String getName() {
return name;
}
public int getHealth() {
return health;
}
public void setHealth(int health) {
if (health >= 1 && health <= 100) {
this.health = health;
} else {
this.health = 10;
}
}
public int getLove() {
return love;
}
public void setLove(int love) {
this.love = love;
}
protected abstract void speak();//宠物自白的行为
protected abstract void eat();// 吃的行为
}
Penguin.java
package jsj.java.exam.test05;
public class Penguin extends Pet {
private String sex;
public Penguin(String name, String sex, int health, int love) {
super(name,health,love);
this.sex = sex;
}
/**
* 宠物的自白
*/
public final void speak() {
System.out.println("宠物的自白");
System.out.println("我的名字叫" + getName() + "我的健康状况是" + getHealth() + "我的性别是"
+ sex + "我与主人的亲密度为" + getLove());
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
//TODO 重写父类的eat方法,健康值增加6
@Override
protected void eat() {//--1
super.health=super.health+6;//--1
}
//TODO 定义子类特有的方法,游泳swimming
//输出"正在游泳",健康值减少3,与主人的亲密度增加5
public void swimming(){//--1
System.out.println("游泳");
super.health=super.health-3;//--1
super.love=super.love+5;//--1
}
}
Dog.java
package jsj.java.exam.test05;
//TODO 将Dog类定义完整
public class Dog extends Pet {//--1
private String breed;
public Dog(String name, String breed, int health, int love) {
//调用父类的构造方法,完成name,health,love属性的初始化
super(name,health,love);
this.breed = breed;
}
public String getBreed() {
return breed;
}
public void setBreed(String breed) {
this.breed = breed;
}
/**
* 宠物的自白
*/
public void speak() {
System.out.println("宠物的自白");
System.out.println("我的名字叫" + getName() + "我的健康状况是" + getHealth()
+ "我的品种是" + breed + "我与主人的亲密度为" + getLove());
}
//TODO 重写父类的eat方法,健康值增加3
@Override
protected void eat() {
super.health=super.health+3;
}
//TODO 定义子类特有的方法,接飞盘游戏catchFlyingDisk
//输出"正在玩接飞盘的游戏",健康值减少5,与主人的亲密度增加5
public void catchFlyingDisk(){
System.out.println("正在玩接飞盘的游戏");
super.health=super.health-5;
super.love=super.love+5;
}
}
Master.java
package jsj.java.exam.test05;
/**
* 主人类
*/
public class Master {
//喂养动物的方法feed
public void feed(Pet pet){
pet.eat();
}
//TODO 定义与宠物玩耍的方法play
//如果是狗,则玩接飞盘游戏
//如果是企鹅,则游泳
public void play(Pet pet){
if(pet instanceof Dog){
((Dog) pet).catchFlyingDisk();
}else if(pet instanceof Penguin){
((Penguin) pet).swimming();
}
}
}