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第十二节 多态(3)

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                         }
                   }
         //定义食物类
                   class food
         {
                       String name;
                       public void showName()
                       {
                       }
         }
         //定义鱼类
         class Fish extends food
         {
                    public void showName()
                    {
                        System.out.println("鱼");
                     }
         }
                 //定义骨头类
         class Bone extends food
                 {
                     public void showName()
                     {
                           System.out.println("骨头");
                     }
                 }
                 //动物类Animal
                 class Animal1
        {
                    String name;
                    int age;
                    public String getName()
                    {
                           return name;
                     }
                   public void setName(String name)
                   {
                                 this.name = name;
                   }
                   public int getAge()
                  {
                             return age;
                  }
                  public void setAge(int age)
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