【Java每日一题】20170116

package Jan2017;  
  
public class Ques0116 {  
    public static void main(String[] args) {  
        System.out.println(new BigDog("大黑狗", "黑色"));  
    }  
}  
  
class Dog{  
  
    String name;  
  
    public Dog(String name) {  
        super();  
        this.name = name;  
    }  
  
    public String toString(){  
        return "name:"+name;  
    }  
}  
  
class BigDog extends Dog{  
  
    String color;  
  
    public BigDog(String name, String color) {  
        this.name = name;  
        this.color = color;  
    }  
  
    public String toString(){  
        return "name:"+name+", color:"+color;  
    }  
}