用java实现文件中数据的读取并存储到二维数组中

package com.yp.algorithm;

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;

public class Readfile2 {
    public static void main(String[] args) {
        FileReader file = null;
            try {
                file = new FileReader(".//src//test.dat");
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            }
            System.out.println("文件测试数据如下：");
            txtString(file);
    }
    public static void txtString(FileReader file){
        BufferedReader br = new BufferedReader(file);//读取文件
        try {
            String line = br.readLine();//读取一行数据
            int lines = Integer.parseInt(line);//将数据转化为int类型
            System.out.println(lines);

            String []sp = null;
            String [][]c = new String[lines][lines];
            int [][]cc = new int[lines][lines];
            int count=0;
            while((line=br.readLine())!=null) {//按行读取
                sp = line.split(" ");//按空格进行分割
                for(int i=0;i<sp.length;i++){
                    c[count][i] = sp[i];
                }
                count++;
            }
            for(int i=0;i<lines;i++){
                for(int j=0;j<lines;j++){
                    cc[i][j] = Integer.parseInt(c[i][j]);
                    System.out.print(cc[i][j]);
                }
                System.out.println();
            }

        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}