Исходный текст программы RandomAccess.java

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// ==========================================
// RandomAccess.java
// (C) Alexandr Frolov, 1998
// E-mail: frolov@glasnet.ru
// Web:    http://www.glasnet.ru/~frolov 
// ==========================================

import java.io.*;
import java.util.*;

public class RandomAccess 
{
  public static void main(String args[])
  {
    int i;
    
    System.out.println(
      "* Random Access File demonstration\n");
      
    RandomAccessFile data;
    long dataPointer = 0;
    Vector idx = new Vector();
    String s;
    
    try
    {
      data = 
        new RandomAccessFile(
          "direct.dat", "rw");
        
      for(i = 0; i < 10; i++)
      {
        dataPointer = data.getFilePointer();
	idx.addElement(new Long(dataPointer));
	
	data.writeBytes("Record " + i + "\n");
      }
    
      for(i = 9; i >= 0; i--)
      {
        dataPointer = (long)
          ((Long)idx.elementAt(i)).doubleValue();
	data.seek(dataPointer);
	
	s = data.readLine();
        System.out.println(s);
      }
    }
    catch(Exception ex)
    {
      System.out.println(ex.toString());
    }
  }
}

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