如何将包含流的txt存储到2d数组？[闭门]

Question

我有一个构造函数，它的参数是文件名

public class Main{
    public static void main(String[] args) throws IOException {
        Sad obj=new Sad("data.txt");
   }
}

class Sad{
    String [][] t=new String[3][3];

    public Sad(File data) throws IOException {

        String s= Files.readAllLines(Paths.get(data)).toString();
        t=Arrays.stream(s.split("")).map(x->Arrays.stream(x.split(""))
                .toArray())
                .toArray(this.t[][]::new);
   }
}

文本如下所示：

aaaa
bbbb
cccc
dddd

Answer 1

我相信会是这样的：

String[][] string2Darray = null;
try {
    java.nio.file.Path p = java.nio.file.Paths.get("data.txt");
    string2Darray = java.nio.file.Files.lines(p)
            .map((line) -> line.trim().split(""))
            .toArray(String[][]::new);
}
catch (IOException ex) {
   // Handle the exception the way you want...
}
    
// Display the 2D Array in Console Window.
if (string2Darray != null) {
    System.out.println(Arrays.deepToString(string2Darray));
}