テキストファイルを
16進数で読み込む

//Sample07_01.java

import java.io.File;

class Sample07_01{
  public static void main(String[] args){

      String[] mapPaths = {
          "floor01.txt", //1階のマップ
          "floor02.txt"  //2階のマップ
      };
      int[][][] map3D = new int[mapPaths.length][][];

      //16進数として読込
      for(int i=0; i<mapPaths.length; i++){
          map3D[i]
          = ReadFile_04.toIntArray2D(new File(mapPaths[i]), "UTF-8", ",", 16);
      }

      //表示
      for(int i=0; i<map3D.length; i++){
          System.out.println(mapPaths[i]);
          if(map3D[i] != null){
            for(int j=0; j<map3D[i].length; j++){
                for(int k=0; k<map3D[i][j].length; k++){

                    System.out.printf("%06x ", map3D[i][j][k]);
                }
                System.out.println();
            }
              System.out.println("end");
          }else{
              System.out.println("null");
          }
          System.out.println();
      }
  }

}

//ReadFile_04.java

import java.io.File;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.io.BufferedReader;
import java.io.UnsupportedEncodingException;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;

class ReadFile_04{

  /*何進数か指定しない場合は10進数として処理*/
  public static int[][] toIntArray2D(
              File inputFile,
              String encoding,
              String delimiters
  ){
      return toIntArray2D(inputFile, encoding, delimiters, 10);
  }

  /*何進数か指定できるオーバーロード*/
  public static int[][] toIntArray2D(
              File inputFile,
              String encoding,
              String delimiters,
              int radix
  ){
      int[][] array2D = null;

      ArrayList<String> list = fileToList(inputFile, encoding);

      if(list!=null){
          array2D = new int[list.size()][];
          for(int i=0; i< list.size(); i++){
              String[] strArray = list.get(i).split(delimiters);
              int[] intArray = new int[strArray.length];
              try{
                  for(int j=0; j< strArray.length; j++){
                      //要素を一つずつ intに変換
                      intArray[j] = Integer.parseInt(strArray[j], radix);
                  }
                  array2D[i] = intArray;//一次元配列を二次元配列の要素として代入
              }catch(NumberFormatException e){
                  e.printStackTrace();
                  return null;
              }
          }
      }else{
          return null;
      }
      return array2D;
  }

  public static ArrayList<ArrayList<String>> toStringList2D(
              File inputFile,
              String encoding,
              String delimiters
  ){
      ArrayList<ArrayList<String>> List2D = null;

      ArrayList<String> list = fileToList(inputFile, encoding);
      if(list!=null){
          List2D = new ArrayList<ArrayList<String>>();
          for(int i=0; i< list.size(); i++){
              String[] line = list.get(i).split(delimiters);
              List2D.add(new ArrayList<String>(Arrays.asList(line)));
          }
      }else{
          return null;
      }
      return List2D;
  }

  public static String[][] toStringArray2D(
              File inputFile,
              String encoding,
              String delimiters
  ){
      String[][] array2D = null;

      ArrayList<String> list = fileToList(inputFile, encoding);
      if(list!=null){
          array2D = new String[list.size()][];
          for(int i=0; i< list.size(); i++){
              array2D[i] = list.get(i).split(delimiters);
          }
      }else{
          return null;
      }
      return array2D;
  }

  public static ArrayList<String> fileToList(
              File inputFile,
              String encoding
  ){
      ArrayList<String> list = null;
      try {
          //ファイルの読込
          BufferedReader br = new BufferedReader(
                  new InputStreamReader(
                      new FileInputStream(inputFile), encoding
                  )
          );

          list = new ArrayList<String>();
          String strLine;
          while((strLine = br.readLine()) != null) {

              list.add(strLine);
          }
          br.close();
      } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
      } catch (FileNotFoundException e) {
          e.printStackTrace();
      } catch (IOException e){
          e.printStackTrace();
      } catch (NumberFormatException e){
          e.printStackTrace();
          return null;
      }
      return list;
  }
}

>cd ws
ws>javac -encoding UTF-8 Sample07_01.java
ws>java Sample07_01
floor01.txt
001001 001010 001010 001100 001001 001000 001000 001110 001101 061101
000101 001011 001110 000101 000011 000010 000110 001001 000110 000101
000011 001000 001010 000020 001010 001000 001010 000100 001111 000101
001101 000101 001001 002100 001101 000101 061101 000011 521210 000112
000111 000101 000011 000110 000101 000101 000211 a41102 001111 001101
001001 000010 001100 001001 000100 000201 451112 000201 001012 000100
000101 001101 000101 000011 000110 000101 001011 000010 001100 000101
220201 000102 000101 001011 001010 000110 001011 001110 000101 000101
000101 000111 000011 001010 351110 b31021 001010 001010 000110 000101
000011 001010 001010 151110 071011 c52110 451011 001010 001010 000110
end

floor02.txt
351101 001011 001100 001001 001010 001010 001100 001011 001110 071101
000011 001100 000111 000101 001001 001100 000011 001010 521200 000112
001111 000001 001010 000100 000001 000010 001010 001100 000101 001101
001011 000110 001111 000101 000111 001101 071101 000111 000101 000101
001101 001001 001200 000002 001010 000100 000211 a41102 000101 000101
000201 000012 000110 000111 001111 000011 001010 000110 000101 000111
000011 001100 951121 001101 651121 001001 001000 001010 000010 001100
001101 000011 002020 000000 002020 000000 000100 001011 001110 000101
000011 001100 852111 000101 752111 000001 000010 001010 001010 000100
001111 000011 001010 000010 001010 000110 001011 001010 001110 000111
end