题解 | #修改Data类的定义#

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        while (scanner.hasNextInt()) {
            int x = scanner.nextInt();
            int y = scanner.nextInt();
            Data data = new Data(x, y);
            System.out.println(data.getX() + data.getY());
        }
    }

}
/**
*私有方法不能被类的外部访问调用
*所以需要改为公有(public)的或者受保护(protected)来修饰方法
*其次在调用Data传递参数的时候需要使用this来传递参数原因是因为类中的属性被私有修饰
*即 private int x和y
*/
class Data {

    private int x;
    private int y;

    public Data(int x, int y) {
        this.x = x;
        this.y = y;
    }

    public int getX() {
        return x;
    }

    public int getY() {
        return y;
    }

}