FIle Read And Write

import java.io.BufferedWriter;
import java.nio.charset.Charset;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.nio.file.StandardOpenOption;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Scanner;
import java.util.TreeMap;

public class MapExample {
  public static void main(String[] args) {
    Scanner reader = null;
    try {
      reader = new Scanner(Paths.get("C:\\List1.txt"));
    }
    catch (Exception e) {
    }
    BufferedWriter writer = null;
    try {
      writer =
        Files.newBufferedWriter(Paths.get("C:\\List2.txt"),
          Charset.forName("UTF-8"), StandardOpenOption.WRITE);
    }
    catch (Exception e) {
    }
    if (reader == null || writer == null) System.exit(1);
    Map<String, Integer> map = new TreeMap<String, Integer>();
    while (reader.hasNextLine()) {
      String name = reader.nextLine().trim();
      if (map.get(name) == null) map.put(name, 0);
      else map.put(name, map.get(name) + 1);
    }
    reader.close();
    while (!map.isEmpty()) {
      Entry<String, Integer> max = map.entrySet().iterator().next();
      for (Entry<String, Integer> e: map.entrySet())
        if (max.getValue() < e.getValue()) max = e;
      try {
        writer.write(max.getKey() + "\n");
      }
      catch (Exception e) {
      }
      map.remove(max);
    }
    try {
      writer.close();
    }
    catch (Exception e) {
    }
  }
}