java内部类

类里面建类

class animals{    
    class dog{
        int leg;
        String name;
        public dog(int leg,String name){
            this.leg=leg;
            this.name=name;
        }
        void run(){
            System.out.println(name+"用"+leg+"条腿跑");
        }
    }
}
public class ChengYuanClass {

    public static void main(String[] args) {
        new animals().new dog(4, "哈士奇").run();
        
        
    }

}