scanner.skip("(\r\n|[\n\r\u2028\u2029\u0085])?");

what does it means? and why this (private static final Scanner scanner = new Scanner(System.in);) is private?

what is wrong in this code

what is wrong in this code

what is wrong in this code

import java.io.; import java.math.; import java.security.; import java.text.; import java.util.; import java.util.concurrent.; import java.util.regex.*;

public class Solution {

private static final Scanner scanner = new Scanner(System.in);

public static void main(String[] args) {
    int N = scanner.nextInt();
    if(N % 2 == 0 && N >= 6 && N <= 20)
    {
        System.out.println("Weird");
    }
    else if(N % 2 == 0 && N >= 2 && N <=5)
    {
        System.out.println("Not Weird");
    }
    else if(N % 2 == 0 && N > 20)
    {
        System.out.println("Not Weird");
    }
     else
    {
        System.out.println("Weird");
    }
    scanner.skip("(\r\n|[\n\r\u2028\u2029\u0085])?");

    scanner.close();
}

}