CODEWITHSUNDEEP
javafileline
biggdman
biggdman

Reputation: 2106

count number of lines of a file in java, using random access file

Is there a way to count the number of lines in a file, in java, if the file was declared as a random access file? I was thinking of sth like:

while(stop_condition)
{String str=file.readLine();
 count++;
 }

But i can't find in the random access file documentation, what could be in this case the stop_condition. Could you please help me out. Thank you.

Upvotes: 1

Views: 3469

Answers (3)

LuckyLuke
LuckyLuke

Reputation: 49097

String line = null;

while ((line = file.readLine() != null) {
     // Do something :)
}

Upvotes: 1

Jon Egeland
Jon Egeland

Reputation: 12623

Documentation was the first result in google: http://docs.oracle.com/javase/1.4.2/docs/api/java/io/RandomAccessFile.html

Here's what it says to do:

while(file.readLine() != null)
  count++;

Upvotes: 3

Brigham
Brigham

Reputation: 14544

file.readLine() will return null when you reach the end of the file.

Upvotes: 1

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