How to read a text file and add lines into 2D String array in Java

1 Answer

0 votes
package javaapplication1;

import java.io.BufferedReader;
import java.io.FileReader;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class JavaApplication1 {

    public static void main(String[] args) {

        try (BufferedReader br = new BufferedReader(new FileReader("d:\\data.txt"))) {

            List<String[]> arr2d = new ArrayList<String[]>();
            while (true) {
                String line = br.readLine();
                if (line == null) {
                    break;
                }
                String[] arr = line.split(",");
                arr2d.add(arr);
            }
            arr2d.stream().forEach((row) -> { 
                System.out.println(Arrays.toString(row));
            });

        } catch (Exception e) {
            System.out.print(e.toString());
        }
    }
}

// in file:
// java,javascript
// c,c++,c#
// php,html,css

/*
             
run:

[java, javascript]
[c, c++, c#]
[php, html, css]
    
 */

 



answered Nov 25, 2016 by avibootz
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