import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.RandomAccessFile;


public class ReverseReader {

    private static final int LINES = 100;
    private static final String FILENAME = "C:\\Users\\KowKiller\\Dropbox\\mIRC\\logs\\#superamici.synIRC.log";

    public static void main(String[] args) {
        RandomAccessFile stream = null;
        try {
            stream = new RandomAccessFile(FILENAME, "r");
            long pos = stream.length();
            safeSeek(stream, --pos);
            int c;
            int nLines = 0;
            while (pos >= 0 && nLines < LINES + 1 && (c = stream.read()) != -1) {
                if (c == '\n') {
                    nLines++;
                }
                safeSeek(stream, --pos);
            }
            stream.seek(pos+2);
            int i=0;
            String line;
            while ((line = stream.readLine()) != null) {
                System.out.println(line);
            }

        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                stream.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }


    }

    private static void safeSeek(RandomAccessFile stream, long pos)
            throws IOException {
        if (pos > 0) {
            stream.seek(pos);
        } else {
            stream.seek(0);
        }
    }

}