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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