package io;

import java.io.*;

import java.util.*;

/**

* RUN:

* javac io/UsingRandomAccessFile.java && java io.UsingRandomAccessFile

*

* OUTPUT:

*

*/

public class UsingRandomAccessFile {

static String file = "rtest.dat";

static void display() throws IOException {

RandomAccessFile rf = new RandomAccessFile(file, "r");

for (int i = 0; i < 7; i++) {

System.out.println("Value " + i + " " + rf.readDouble());

}

System.out.println(rf.readUTF());

rf.close();

}

public static void main(String[] args) throws IOException {

RandomAccessFile rf = new RandomAccessFile(file, "rw");

for (int i = 0; i < 7; i++) {

rf.writeDouble(i*1.414);

}

rf.writeUTF("The end of the file");

rf.close();

display();

rf = new RandomAccessFile(file, "rw");

rf.seek(5*8);

rf.writeDouble(47.0001);

rf.close();

display();

}

}