题解 | 修改Data类的定义

import java.util.Scanner;
public class Main
 {

    public static void main(String[] args)
    {
      Scanner input=new Scanner(System.in);
      Data data=new Data();
      data.x=input.nextInt();
      data.y=input.nextInt();
      int box=data.x+data.y;
      System.out.print(box);  
    }

}
class Data
{
   int x;
   int y;
   public Data()
   {}

}