인프런 커뮤니티 질문&답변

import java.nio.channels.Pipe;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Scanner;

class Point implements Comparable<Point>{
    public int x, y;
    Point(int x, int y){
        this.x = x;
        this.y = y;
    }
    @Override
    public int compareTo(Point o){
        if(this.x == o.x) return this.y-o.y;
        else return this.x-o.x;
    }
}
class Main{
    public static void main(String[] args){
        Scanner kb = new Scanner(System.in);
        int n = kb.nextInt();
        ArrayList<Point> arr = new ArrayList<>();
        for(int i = 0; i < n; i++){
            int x= kb.nextInt();
            int y= kb.nextInt();
            System.out.println(x+","+y);
            arr.add(new Point(x, y));
        }
        Collections.sort(arr);
        System.out.println(">>");
        for (Point o: arr) System.out.println(o.x+" "+o.y);
    }
}

arr.add(new Point(x, y));

이 부분을 출력해서 값을 프린트하고 싶은데 어떻게 코드를 짜야하나요??

public static void main(String[] args){
    Scanner kb = new Scanner(System.in);
    int n = kb.nextInt();
    ArrayList<Point> arr = new ArrayList<>();
    for(int i = 0; i < n; i++){
        int res;
        int x= kb.nextInt();
        int y= kb.nextInt();
        System.out.println(x+","+y);
        arr.add(new Point(x, y));
        res = arr.add(new Point(x, y));
        System.out.println(res);
    }

이렇게 res 변수를 만들어서 작석했는데 에러가 나네요 ㅠ 도와주세요ㅠㅠㅠ