java实现宠物商店（查找宠物，添加宠物功能）.md

代码如图：
主要是练习一下对象的多态和接口的使

interface Pet{
	public String getName();
	public String getColor();
	public int getAge();
	
}
class Cat implements Pet{
	private String name;
	private String color;
	private int age;
	public Cat(String name,String color,int age)
	{
		this.name=name;
		this.color=color;
		this.age= age;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getColor() {
		return color;
	}
	public void setColor(String color) {
		this.color = color;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	
	
}
class Dog implements Pet{
	private String name;
	private String color;
	private int age;
	public Dog(String name,String color,int age)
	{
		this.name=name;
		this.color=color;
		this.age= age;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getColor() {
		return color;
	}
	public void setColor(String color) {
		this.color = color;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	
	
}
class PetShop{
	private Pet[] petArray;
	private int foot;
	public PetShop(int len)
	{
		if(len>0)
		this.petArray= new Pet[len];
		else
			this.petArray=new Pet[1];
	}
	public Pet[] getPetArray() {
		return petArray;
	}
	public void setPetArray(Pet[] petArray) {
		this.petArray = petArray;
	}
	public int getFoot() {
		return foot;
	}
	public void setFoot(int foot) {
		this.foot = foot;
	}
	public void addPet(Pet pet)
	{
		if(foot<this.petArray.length)
		{
			this.petArray[this.foot]=pet;
			this.foot++;
		}
		else
		{
			System.out.println("无法添加已经满员");
		}
			
	}
	public Pet[] search(String keyword)
	{
		int count=0;
		for(int i=0;i<this.petArray.length;i++)
		{
			if(this.petArray[i]!=null)
			{
				if(this.petArray[i].getName().indexOf(keyword)!=-1||this.petArray[i].getColor().indexOf(keyword)!=-1)
				{
				count++;
				}
			}
		
		}
		Pet[] p = new Pet[count];
		int flag=0;
		for(int i=0;i<this.getPetArray().length;i++)
		{
			if(this.petArray[i]!=null)
			{
				if(this.petArray[i].getName().indexOf(keyword)!=-1||this.petArray[i].getColor().indexOf(keyword)!=-1)
				{
					p[flag]=this.petArray[i];
					flag++;
				}
			}
		}
		return p;
			
	
}

}
public class Main {
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		PetShop ps= new PetShop(3);
		Cat cat1= new Cat("1","白",5);
		
		ps.addPet(cat1);
		ps.addPet(new Cat("2","黑",6));
		ps.addPet(new Dog("狗","黑",2));
		for(int i=0;i<ps.search("黑").length;i++)
		{
			System.out.println(ps.search("黑")[i].getName());
		}
	}

}