Android Text File Read readFileLineByLine(File file)

Parameter

Exception

Return

Declaration

public static ArrayDeque<String> readFileLineByLine(File file)
        throws FileNotFoundException 

Method Source Code

//package com.java2s;
import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayDeque;

public class Main {
    /**//from  w  w w . j ava 2s .  c  o m
     * Reads file and returns contents as ArrayDeque<String>, where each element is a line of the file
     * @param file java.io.File object of file to read
     * @return File contents as String, or "" if file is blank
     * @throws FileNotFoundException thrown if file specified does not exist
     */
    public static ArrayDeque<String> readFileLineByLine(File file)
            throws FileNotFoundException {

        //Setup
        String filePath = file.getAbsolutePath();
        FileInputStream fstream = new FileInputStream(filePath);
        DataInputStream in = new DataInputStream(fstream);
        BufferedReader br = new BufferedReader(new InputStreamReader(in));
        String strLine;
        ArrayDeque<String> forReturn = new ArrayDeque<String>();

        try {
            // Read File Line By Line
            while ((strLine = br.readLine()) != null) {
                // Print the content on the console
                forReturn.add(strLine.trim());
            }

            // Close the input stream
            in.close();
        } catch (IOException e) {
            //do nothing, file is presumably empty so return blank ArrayDeque<String>         
        }

        return forReturn;

    }
}

Related

1. readFile(String filename)
2. readFile(String path)
3. readFileAsString(File file)
4. readFileAsString(File file, String charset)
5. readFileAsString(String filename)
6. readFree(File file)
7. readFromFile(File file)
8. readFull(String path)
9. readLines(String file)