The Grid

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;

class Result {

    /*
     * Complete the 'gridSearch' function below.
     *
     * The function is expected to return a STRING.
     * The function accepts following parameters:
     *  1. STRING_ARRAY G
     *  2. STRING_ARRAY P
     */

    public static String gridSearch(List<String> G, List<String> P) {
    // Write your code here
    boolean found = false;
    boolean test = false;
    char[][] grid = grid(G);
    char[][] pGrid = grid(P);

    if (test){
        printGrid(grid);
        printGrid(pGrid);
    }


    for (int i = 0; i <= grid.length-pGrid.length; i++){
        if (found) break;
        char[] match;
        for (int j = 0; j <= grid[0].length-pGrid[0].length; j++){
            match = Arrays.copyOfRange(grid[i], j, j+pGrid[0].length);

            if (Arrays.equals(match, pGrid[0])){
                if (test){
                System.out.println(i + " " + j);
                printLine(match);
                printLine(pGrid[0]);
                }
                boolean allMatch = true;
                int pGridRow = 1;
                for (int k = i+1; k < i+pGrid.length; k++){
                    match = Arrays.copyOfRange(grid[k], j, j+pGrid[0].length);
                    if (test){
                        printLine(match);
                        printLine(pGrid[pGridRow]);
                    }
                    if (!Arrays.equals(pGrid[pGridRow], match)){
                        allMatch = false;
                        break;
                    }
                    pGridRow++;
                }
                if (allMatch){
                    found = true;
                    break;
                }

            }
        }
    }

    return found ? "YES" : "NO";
    }

    public static char[][] grid(List<String> list){
        char[][] grid = new char[list.size()][list.get(0).length()];

        for (int i = 0; i < grid.length; i++){
            grid[i] = list.get(i).toCharArray();
        }

        return grid;
    }

    public static void printGrid(char[][] grid){
        for (int i = 0; i < grid.length; i++){
            for (int j = 0; j < grid[0].length; j++){
                System.out.print(grid[i][j]);
            }
            System.out.println("");
        }
    }

    public static void printLine(char[] line){
        for (char c : line){
            System.out.print(c);
        }
        System.out.println("");
    }

}