class Animal
{
private String name;
private int age;
Animal()
{
}
Animal(String name,int age)
{
this.name = name;
this.age = age;
}
public void speak()
{
System.out.println("对象的名字" + name + "对象的年龄" + age);
}
}
public class Bird extends A
{
Bird(String a,int b)
{
super(a,b);
}
public static void main(String[] args)
{
A a = new A("A",10);
a.speak();
B b = new B("B",20);
b.speak();
}
}