1 class RedCowForm {
2 static String formName;
3 RedCow cow; //内部类声明对象
4 RedCowForm() {} //不写对输出结果没有影响
5 RedCowForm(String s) {
6 cow=new RedCow(150,112,5000);
7 formName=s;
8 }
9 public void showCowMess() {
10 cow.speak();
11 }
12 class RedCow { //内部类的声明
13 String cowName="红牛";
14 int height,weight,price;
15 RedCow(int h,int w,int p) {
16 height=h;
17 weight=w;
18 price=p;
19 }
20 void speak() {
21 System.out.println("偶是"+cowName+",身高:"+height+"cm 体重"+weight+"kg,生活在"+formName);
22 }
23 } //内部类结束
24 } //外部类结束
25 public class Example7_1 {
26 public static void main(String[] args) {
27 RedCowForm form=new RedCowForm("红牛农场");
28 form.showCowMess();
29 form.cow.speak();
30 }
31 }
