从文本文件中读取空格到Char / String数组中

Question

I am trying to read and create a multi-dimensional array of char (not possible?) or String from a text file splitting each char/symbol/space.

Text file containing below two lines 2x10 :

abcd  x/@#
% addk a 2

I want the array slots to either contain the empty space or at least a replace it with pre-defined character.

BufferedReader br = new BufferedReader(new FileReader("files/myFile.txt"));
for(int i=0; i<2; ++i)
{
    for(int j=0; j<10; ++j)
    {
        chars[i][j] = br.readLine().charAt(j);

    }
}

Answer 1

String's toCharArray() will likely solve your problem. Call it on each line read and feed it into each row of your array of char[][].

// in constants declaration
public final static int ROWS = 2;
public final static int COLS = 10;

// somewhere else in your code.
char[][] chars = new char[ROWS][COLS];

// making sure to catch exceptions with opening and reading file
BufferedReader br = new BufferedReader(new FileReader("files/myFile.txt"));

for(int i = 0; i < ROWS; ++i) {
  String line = br.readLine();

  // check line exists, has a length of COLS, else throw exception.

  chars[i] = line.toCharArray();
}

ROWS and COLS are program constants, and you'd better make darn sure that these numbers are correct, else this code will go down in flames. Better to use List<List<Character>> perhaps.

Answer 2

您的代码中包含一个错误，每次使用br.readLine()都会读取一条新行，因此将br.readLine（）移至外循环并使用此字符串在位置j处查找char。