Java program to read last line of a file

This program will output the last line of the file 'file.txt'

Code Java:

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import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.InputStreamReader;
 
public class ReadLastLine{
 
 public static void main(String[] args) throws Exception {
 
  FileInputStream in = new FileInputStream("file.txt");
  BufferedReader br = new BufferedReader(new InputStreamReader(in));
 
  String strLine = null, tmp;
 
  while ((tmp = br.readLine()) != null)
  {
     strLine = tmp;
  }
 
  String lastLine = strLine;
 
  System.out.println(lastLine);
 
  in.close();
 }
}

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Hi,
I found there is another way of doing this.

Code :

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RandomAccessFile rfile = new RandomAccessFile(file,"r"); 
 
rfile.seek(file.length()); 
Third One -
FileInputStream fis=new FileInputStream("D:\\ test\\sample.txt");
 
String fileContent = new Scanner(fis).useDelimiter("\\Z").next()

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Source : Java : Quick way to read to get the last line from a File : "java" Category at Simply Share It

Yeah if you use the BufferedReader and you have a file which might be a couple of gigabyte in size, first of all your JVM will need a lot of memory and it will take you a while to do.

RandomAccess might be the better way to go.

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