java读txt文件

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
/**
 * Created by zangtt on 17-6-30.
 */
public class readTxt {
    public double[][][] readData1(String str,int dim) throws IOException {
        FileReader fr = new FileReader(str);
        //可以换成工程目录下的其他文本文件
        BufferedReader br = new BufferedReader(fr);

        String line = null;
        double[][][] array = new double[610][340][dim]; // 2行
        int ind = 0;
        String[] sp;
        int k = 0;
        while((line = br.readLine()) != null){
            sp = line.split(",");
//            System.out.println(sp.length);
            for(int j = 0;j < 340; j++){
                for (int i = 0; i < 610; i++) {
                    array[i][j][k] = Double.parseDouble(sp[i+j*610]);
                }
            }
            k++;
        }
        return array;
    }
}