this my code:

import java.io.; import java.math.; import java.security.; import java.text.; import java.util.; import java.util.concurrent.; import java.util.function.; import java.util.regex.; import java.util.stream.*; import static java.util.stream.Collectors.joining; import static java.util.stream.Collectors.toList;

public class solution{ public static void main(String[] args){ Scanner scan = new Scanner(System.in); int [][]a = new int[6][6]; for(int i = 0; i<6; i++){ for(int j =0; j<6; j++){ a[i][j] = scan.nextInt(); } }

    System.out.println(findlarges(a));
}

public static int findlarges(int [][]a){
    int largest = Integer.MIN_VALUE;

    for(int i = 1; i<=4; i++){
        for(int j = 1; j <=4; j++){
            int sum = 0;
            sum += a[i][j] + a[i+1][j-1] + a[i+1][j] + a[i+1][j+1]
            + a[i-1][j-1] + a[i-1][j] + a[i-1][j+1];
            if(sum > largest){
                largest = sum;
            }
        }
    }
    return largest;
}

}