File Random Write

import javax.swing.*;

import java.io.*;

public class RandomFileWriteSample1

{

final static int RECORDLENGTH = 49;

int recno = 0;

String title = "Lord of the rings";

int length = 60;

char lent = 'y';

RandomAccessFile randomFile;

public static void main(String[] args)

{

new RandomFileWriteSample1();

}

public RandomFileWriteSample1()

{

try

{

randomFile = new RandomAccessFile("random0.dat", "rw");

long fileLength = randomFile.length();

long recno = fileLength / RECORDLENGTH;

randomFile.seek(recno*RECORDLENGTH);

randomFile.writeUTF(title);

randomFile.seek((recno*RECORDLENGTH)+42);

randomFile.writeInt(length);

randomFile.seek((recno*RECORDLENGTH)+47);

randomFile.writeChar(lent);

System.out.println("L:" + fileLength + " LR:" + recno);

randomFile.close();

}

catch (Exception e)

{

System.out.println("File error");

}

}

}