import java.io.*;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.*;

public class Chatlogs {

    private static final DateFormat FORMAT = new SimpleDateFormat("yyyy MMM dd hh:mm:sss");

    public static void main(String... args) {
        try {
            BufferedWriter bw;
            bw = new BufferedWriter(new FileWriter("C:/java/writetohere.txt"));
            bw.write(readFile(new File("C:/java/readfromhere.txt").getAbsolutePath()));
            bw.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static String readFile(String path) throws IOException {
        ArrayList<String> list = new ArrayList<String>();
        FileInputStream fstream = new FileInputStream(path);
        DataInputStream in = new DataInputStream(fstream);
        BufferedReader br = new BufferedReader(new InputStreamReader(in));
        String strLine;
        StringBuilder sb = new StringBuilder();
        while ((strLine = br.readLine()) != null) {
            if (!strLine.contains("**** LOGGEN") && !strLine.contains("**** LOGGING") && !strLine.equals("")) {
                list.add(strLine);
            }
        }
        br.close();
        in.close();
        fstream.close();
        List<LogEntryComparator> entries = new LinkedList<LogEntryComparator>();
        Date date = null;
        for (String line : list) { //list is an arraylist of strings.
            String time = "2011 " + line.substring(0, 15);
            try {
                date = FORMAT.parse(time);
            } catch (Exception e) {
                e.printStackTrace();
            }
            entries.add(new LogEntryComparator(date, line.substring(15)));
        }
        Collections.sort(entries);
        for (int i = 0; i < entries.size(); i++) {
            System.out.println(entries.get(i).time + entries.get(i).entry);
        }
        return sb.toString();

    }
}


readfromhere.txt:
jul 31 17:09:50 <phl0w> tes
jul 31 17:10:49 <Andy_> Speed
jul 31 17:10:51 <Andy_> lol Speed
jul 31 19:20:50 <phl0w> lolfile1
jul 29 17:09:50 <phl0w> tes
jul 31 17:08:49 <yyyy> alewrwae
jul 31 17:11:51 <xxxx> wrkjaer
jul 31 19:20:53 <phl0w> lolfile3