reading parts of a txt file

Question

I have a text file with the following URLs:

http://www.google.com.uy
http://www.google.com.es
http://www.google.com.nz

I need to read the second line of this TXT, the second URL showed there. I've been researching and I didn't find what I exactly need, because, although I know I have to use the BufferedReader class, I don't know how to specify the "line" I want to read.

This is what I wrote so far:

String fileread = "chlist\\GATHER.txt";
try {                                         
    BufferedReader br = new BufferedReader(new FileReader(fileread));
    String gatherText = br.readLine();
    br.close();
} catch (IOException ioe) {}

Keep a counter of the number of lines you read. Stop at the second one. — Sotirios Delimanolis, Sep 04 '13 at 14:31
Take a look [here](http://stackoverflow.com/questions/2312756/in-java-how-to-read-from-a-file-a-specific-line-given-the-line-number) and [here](http://stackoverflow.com/questions/2138390/read-a-specific-line-from-a-text-file) — Pshemo, Sep 04 '13 at 14:32
If `readLine()` read one line of text, how many call to `readLine()` do you need to read the second line of the text ? — Julien, Sep 04 '13 at 14:32
Both current answers are covered in the accepted answer of the possible duplicate Q/A — Luiggi Mendoza, Sep 04 '13 at 14:35
There isn't a common way to extract a specific line from a file with Java. You have to count your way through. — But I'm Not A Wrapper Class, Sep 04 '13 at 14:54

score 1 · Answer 1 · answered Sep 04 '13 at 14:35

Each call to br.readLine(); will return you a line from the text file and move you to the next line, so the second call will give you the line you want. The simplest way would be to just write:

String fileread = "chlist\\GATHER.txt";
    try {                                         
        BufferedReader br = new BufferedReader(new FileReader(fileread));
        br.readLine();
        String gatherText = br.readLine();
        br.close();
} catch (IOException ioe) {}

Although you should also consider what you would do if the file does not contain two lines.

muthukumar · Answer 2 · 2013-09-04T14:39:39.097

0

Use this and you can get the file datas by each line

import org.apache.commons.io.FileUtils; using apache-common-io utils

try
{
    List<String> stringList = FileUtils.readLines(new File("chlist\\GATHER.txt"));
    for (String string : stringList)
    {
        System.out.println("Line String : " + string);
    }
}
catch (IOException ex)
{
    Logger.getLogger(NewClass.class.getName()).log(Level.SEVERE, null, ex);
}

edited Sep 04 '13 at 14:39

answered Sep 04 '13 at 14:32

muthukumar

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If you're going to suggest external libraries, at least specify what they are and where to get them. – Sotirios Delimanolis Sep 04 '13 at 14:34

score 0 · Answer 3 · answered Sep 04 '13 at 14:33

0

Try keeping a counter:

final int linesToSkip = 1;
for(int i=0; i<linesToSkip; i++) br.readLine();
String gatherText = br.readLine();

answered Sep 04 '13 at 14:33

blgt

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score 0 · Answer 4 · answered Sep 04 '13 at 14:36

String fileread = "chlist\\GATHER.txt";
try {                                         
BufferedReader br = new BufferedReader(new FileReader(fileread));
String gatherText;
int counter = 0;
while((gatherText = br.readLine()) != null) {
  if(counter ++ == 1) {
    // This is the line you wanted in your example
    System.out.println(gatherText);
  }
}
br.close();
} catch (IOException ioe) {}

score 0 · Answer 5 · answered Sep 04 '13 at 14:38

0

You can use

Apache Commons IO

and then following code

 String line = FileUtils.readLines(file).get(2);

answered Sep 04 '13 at 14:38

Makky

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reading parts of a txt file

5 Answers5