java继承

public class Anmial{    int age;    String name;    public static void main(String[] args)    {          Dog dog=new Dog();          dog.SetAge(10);          System.out.print(dog.GetAge());    }}class Dog extends Anmial{     float height;      void SetAge(int age)      {           this.age=age;      }      int GetAge()     {          return age;     }}

• 内存分析
• 使用extends关键字来继承
• java只支持单继承，不支持多继承