定义一个animal类
 //java上转型对象
 public class Animal {
 public String name=“动物”;
 public String getName(){
 return name;
 }
 public void action(){
 System.out.println(“动物都在我的分类之中”);
 }
 public void feature(){
 System.out.println(“我们都很帅气”);
 }
 }
 定义一个dog类
 public class dog extends Animal{
 public String name=“狗”;
 public String getName(){
 return name;
 }
 public void action(){
 super.action();
 System.out.println(“我是一只狗”);
 }
 public void drink(){
 System.out.println(“我会喝水”);
 }
 }
 定义一个测试类
 public class test01 {
 public static void main(String[] args){
 Animal dog=new dog();
 dog.action();
 dog.feature();
 ((dog) dog).drink();
 String name1=((dog) dog).name;
 System.out.println(name1);
 System.out.println(dog.name);
 System.out.println(dog.getName());
 //((dog)dog.drink());
 }
 }

java51-上转型对象_java