txt文件到2d charArray

Question

我有一个.txt文件，我想把它转换成一个2d的字符数组。唯一的错误是linea.toCharArray()；不能转换为2d数组

public static char[][] llegeixPuzle(String nomPuzle)throws IOException{
    BufferedReader input = new BufferedReader(new FileReader(nomPuzle));
    String linea = "";
    char[][] 2dBoard = new char[0][0];
    while((linea = input.readLine()) != null){
           2dBoard  = linea.toCharArray();
    }
   return 2dBoard;
}

我的.txt文件包含以下内容

 TCADRACT
 PPPPPPPP
 ········
 ········
 ········
 ········
 pppppppp
 tcadract

Answer 1

首先，您必须计算您的rows和column，基本上您有8行8列。因此，首先我们创建了char [][]数组，以便保存数据

 int totalRows = 8;
int totalColumn = 8;
char[][] myArray = new char[totalRows][totalColumn];

创建我们将要读取的文件

  File file = new File(nomPuzle);

从try-catch构造开始，我们在每次迭代中遍历文件，然后创建一个新的char[] chars数组，然后遍历chars[]数组，然后将数据添加到数组myArray[i][j] = chars[j];中。

 try(Scanner scanner = new Scanner(file)) {  //try with resources
          for (int i = 0; scanner.hasNextLine() && i < totalRows; i++) {
              char[] chars = scanner.nextLine().toCharArray();
              for (int j = 0; j < totalColumn && j < chars.length; j++) {
                  myArray[i][j] = chars[j];
              }
          }
      }

全码

public static void main(String[] args) throws IOException {



     char [][] returnedArray =  llegeixPuzle("YOURFILE.TXT");
     
        System.out.println(Arrays.deepToString(returnedArray));



    }
    public static char[][] llegeixPuzle(String nomPuzle)throws IOException {

        int totalRows = 8;
        int totalColumn = 8;
        char[][] myArray = new char[totalRows][totalColumn];

        File file = new File(nomPuzle);
      try(Scanner scanner = new Scanner(file)) {  //try with resources
          for (int i = 0; scanner.hasNextLine() && i < totalRows; i++) {
              char[] chars = scanner.nextLine().toCharArray();
              for (int j = 0; j < totalColumn && j < chars.length; j++) {
                  myArray[i][j] = chars[j];
              }
          }
      }

        return myArray;
    }

}

输出

[[T, C, A, D, R, A, C, T], [P, P, P, P, P, P, P, P], [·, ·, ·, ·, ·, ·, ·, ·], [·, ·, ·, ·, ·, ·, ·, ·], [·, ·, ·, ·, ·, ·, ·, ·], [·, ·, ·, ·, ·, ·, ·, ·], [p, p, p, p, p, p, p, p], [t, c, a, d, r, a, c, t]]