public class fruit{
     private int fid;
     public String color;
     public String shape;
     public String name;
     public float price;
     public double sum;

     public void buyingfruit(){
         System.out.printf("你买的水果是%s,",name);
         System.out.printf("%f每斤%n",price);
         System.out.printf("你共买了%f斤%n",sum);
         System.out.printf("共计%f元%n",price*sum);
     }
 }
 public class Apple extends fruit{
     public static void main(String[]args){
         Apple apple=new Apple();
apple.color="红色";
apple.name="红富士苹果";
apple.price=2.5f;
apple.shape="圆形";
apple.sum=2.5f;
apple.buyingfruit();
     }
 }
说是在子类中访问父类的成员变量和方法，可是运行的时候出现这种情况，要在Apple.java文件中声明，该怎么解决？

能告诉我是怎么一回事吗？

是不是说每次运行这个Java文件时都会出现两个Java文件，一个是fruitjava和Apple.java ？@8楼