Collision from text file - Java-Gaming.org

When I used to store my map as a 2D Array I could simply check the players position against the position in the 2D array (x, y) now that I read from a text file I'm not sure how to do so. Below is my code.

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package game;

import java.awt.Graphics;
import java.awt.Image;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;

import javax.imageio.ImageIO;

public class Map {
   
   Image key;
   Image wall;
   
   public Map() {
      try {
         wall = ImageIO.read(new File("src/img/wall.png"));
         key = ImageIO.read(new File("src/img/key.png"));
      } catch (IOException e) {
         e.printStackTrace();
      }
   }
   
   public boolean isBlockedWall(int bx, int by) { 
      
      for (int x = 0; x < 37; x++) {
         for (int y = 0; y < 15; y++) {
            
         }
      }
      
      //return map[y][x] == 1; 
   }
   
   public boolean getGoal(int x, int y) {
      return map[y][x] == 2;
   }
   
   public void draw(Graphics g, Player player) {
        int width = 32;
        int height = 32;

        //for (int x = 0; x < 37; x++) {
           //for (int y = 0; y < 15; y++) {
              //switch(map[y][x]) {
              //case 1:
                 //g.drawImage(wall, (x - player.x) * width, (y - player.y) * height, null);
                 //break;
              //case 2:
                 //g.drawImage(key, (x - player.x) * width, (y - player.y) * height, null);
                 //break;
              //}
           //}
       // }
        
        try {
           BufferedReader in = new BufferedReader(new FileReader(new File("src/levels/1.txt")));
           String read = in.readLine();
           char letter = 0;
           
         for (int x = 0; x < 37; x++) {
            for (int y = 0; y < 15; y++) {
               if (read.charAt(y) == '1') {
                  if (read.charAt(x) == '1') {
                     g.drawImage(wall, (x - player.x) * width, (y - player.y) * height, null);
                  }
               }
            }
         }
      } catch (IOException e) {
         e.printStackTrace();
      }
   }
}

There are obvious errors in isBlockedWall, so I'm wondering how to rectify it.

Shannon.