public class Dog
{
public String brand;//品种
public int age;//年龄
public String toString()
{
return "这是一条"+age+"岁的"+brand;
}
public static void main(String[] args)
{
Dog dog=new Dog();//构造了一个Dog类型的对象
dog.brand="中华田园犬";
dog.age=3;
System.out.println(dog.toString());
}
}