1 public class RedCowForm { 2     static String formName ; 3     RedCow cow ; //内部类声明对象 4    RedCowForm(){} 5    RedCowForm(String s) 6    { 7      cow =new RedCow(150,112,5000); 8      formName= s; 9    }10    public void showCowMess()11    {12        cow.speak();13    }14    class RedCow     //内部类声明15    {16        String cowName="红牛" ;17        int height,weight,price ;18        RedCow(int h ,int w ,int p)19        {20            height=h;21            weight=w;22            price=p;23        }24        void speak()25        {26         System.out.println("偶是"+cowName+",身高"+height+"cm 体重: "+weight+"kg,生活在"+formName);27        }28    }29 }

1 public class test {2     public static void main(String args[])3     {4       RedCowForm form=new RedCowForm("红牛农场");5       form.showCowMess();6       form.cow.speak();7     }8 }