Java实例---简单的宠物管理系统

代码分析

Cat.java

package com.ftl.petshop;

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;
    }
    
}

Dog.java

package com.ftl.petshop;

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;
    }
    
}

Pet.java

package com.ftl.petshop;

interface Pet
{
    public String getName();
    public String getColor();
    public int getAge();
}

PetShop.java

package com.ftl.petshop;


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[foot] = pet;
            this.foot++;
            return true;
        }
        else
        {
            return false;
        }
    }
    
    public Pet[] search(String keyWord)
    {
        Pet[] p = null;
        int count = 0;
        for ( int i = 0; i <this.pets.length; i++)
        {
            if(this.pets[i]!=null)
            {
                if(this.pets[i].getName().indexOf(keyWord)!=-1
                    && this.pets[i].getColor().indexOf(keyWord)!=-1)
                {
                    count++;
                }
            }
        }
        System.out.println("Sum " + count + "is Right...");
        p = new Pet[count];
        int f = 0;
        for (int i = 0; i < this.pets.length;i++)
        {
            if(this.pets[i].getName().indexOf(keyWord)!=-1
                && this.pets[i].getColor().indexOf(keyWord)!=-1)
            {
                p[f] = this.pets[i];
                f++;
            }
        }
        
        return p;
    }
    
    
};

PetShopDemo.java

package com.ftl.petshop;

public class PetShopDemo
{

    public static void main(String[] args)
    {
        // TODO 自动生成的方法存根
        PetShop ps = new PetShop(6);
        ps.add(new Cat("W","W",2));
        ps.add(new Dog("W","W",2));
        ps.add(new Cat("B","B",2));
        ps.add(new Cat("B","W",2));
        ps.add(new Dog("W","BB",2));
        ps.add(new Cat("WW","W",2));
        ps.add(new Dog("AW","W",2));
        print(ps.search("W"));
    }
    public static void print(Pet p[])
    {
        for (int i = 0; i < p.length; i++)
        {
            if(p[i]!=null)
            {
                System.out.println("Age "+ p[i].getAge() +"  Name:"+ p[i].getColor() +"  Color:" + p[i].getName());
            }
        }
    }

}

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