package com.ricky.www;

import java.io.FileDescriptor;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.util.HashMap;
import java.util.Scanner;

public class Test {
  public static void main(String[] args) throws IOException {
    RandomAccessFile ioFile = new RandomAccessFile("c:/family/ricky.txt",
        "rw");

    FileDescriptor descriptor = ioFile.getFD();
    FileInputStream inFile = new FileInputStream(descriptor);
    Scanner scanner = new Scanner(inFile);
    HashMap<Integer, String> map = new HashMap<Integer, String>();
    int line = 0;
    while (scanner.hasNextLine()) {
      map.put(new Integer(++line), scanner.nextLine());
    }

    for (int i = line - 4; i <= line; i++) {
      System.out.println(map.get(new Integer(i)));
    }
  }
}