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〖第6章：面向对象（高级）〗_实例分析：宠物商店

发布时间：2020-12-17 19:32:14编辑：雪饮阅读（）

 任务需求：

一个宠物接口不同种类的宠物类继承该接口，并且有另外一个宠物店类在该类中可以添加宠物和搜索宠物，按宠物的名称或者颜色进行搜索。
interface Pet{
       abstract public String getName();
       abstract public int getAge();
       abstract public String getColor();
}
 
class Cat implements Pet{
       private String name;
       private String color;
       private int age;
       public void setName(String name){
              this.name=name;
       }
       public void setAge(int age){
              this.age=age;
       }
       public void setColor(String color){
              this.color=color;
       }
       public String getName(){
              return this.name;
       }
       public int getAge(){
              return this.age;
       }
       public String getColor(){
              return this.color;
       }
       public Cat(String name,String color,int age){
              this.setName(name);
              this.setAge(age);
              this.setColor(color);
       }
}
class Dog implements Pet{
       private String name;
       private String color;
       private int age;
       public void setName(String name){
              this.name=name;
       }
       public void setAge(int age){
              this.age=age;
       }
       public void setColor(String color){
              this.color=color;
       }
       public String getName(){
              return this.name;
       }
       public int getAge(){
              return this.age;
       }
       public String getColor(){
              return this.color;
       }
       public Dog(String name,String color,int age){
              this.setName(name);
              this.setAge(age);
              this.setColor(color);
       }
}
class PetShop{
       private Pet[] pets;
       private int foot;
       public PetShop(int len){
              if(len>0){
                     this.pets=new Pet[len];
              }
              else{
                     this.pets=new Pet[1];
              }
       }
       public boolean add(Pet pet){
              if(this.foot<this.pets.length){
                     this.pets[this.foot]=pet;
                     this.foot++;
                     return true;
              }
              else{
                     return false;
              }
       }
       public Pet[] search(String keyword){
              int count=0;
              for(Pet x:this.pets){
                     if(x.getName().indexOf(keyword)!=-1 || x.getColor().indexOf(keyword)!=-1){
                            count++;
                     }
              }
              Pet tmp[]=new Pet[count];
             
              for(int x=0;x<this.pets.length;x++){
                     if(this.pets[x].getName().indexOf(keyword)!=-1 || this.pets[x].getColor().indexOf(keyword)!=-1){
                            tmp[x]=this.pets[x];
                     }
              }
              return tmp;
       }
       public Pet[] getPets(){
              return this.pets;
       }
}
public class Hello{
   public static void main(String args[]){
              PetShop ps=new PetShop(5);
              ps.add(new Cat("白猫","白色的",2)) ; // 增加宠物，成功
              ps.add(new Cat("黑猫","黑色的",3)) ; // 增加宠物，成功
              ps.add(new Cat("花猫","花色的",3)) ; // 增加宠物，成功
              ps.add(new Dog("拉步拉多","黄色的",3)) ; // 增加宠物，成功
              ps.add(new Dog("金毛","金色的",2)) ; // 增加宠物，成功
              ps.add(new Dog("黄狗","黑色的",2)) ; // 增加宠物，失败
              System.out.println("-----宠物商店的全部宠物------");
              printPet(ps.getPets());
              System.out.println("-----宠物商店中搜索白色的宠物------");
              printPet(ps.search("白"));
   }
   public static void printPet(Pet pets[]){
          for(Pet x:pets){
                 System.out.println("宠物姓名:"+x.getName()+"\t宠物颜色:"+x.getColor()+"\t宠物年龄："+x.getAge());
          }
   }
}