RanAccFile

import java.io.*;
class RanAccFile{
  public static void main (String args[]) throws IOException{
     RandomAccessFile ObjRW=new RandomAccessFile("RanData.txt","rw");
     System.out.println("¢éÍÁÙÅ·ÕèÍèÒ¹ä´é¡è͹à¾ÔèÁ->"+ObjRW.readLine());
     System.out.println("¢¹Ò´¢éÍÁÙÅ·Ñé§ËÁ´¡è͹à¾ÔèÁ->"+ObjRW.length()+"\n");
     ObjRW.writeBytes("A random access file behaves like a large array of bytes stored in the file system");
     ObjRW.seek(0);
     System.out.println("¢éÍÁÙÅ·ÕèÍèÒ¹ä´éËÅѧà¾ÔèÁ->"+ObjRW.readLine());
     System.out.println("¢¹Ò´¢éͧÁÙÅ·Ñé§ËÁ´ËÅѧà¾ÔèÁ->"+ObjRW.length()+"\n");
  }
}