package com.zetcode;

import java.io.IOException;

import java.io.RandomAccessFile;

import java.nio.ByteBuffer;

import java.nio.charset.StandardCharsets;

public class FileChannelWrite {

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

var fileName = "src/resources/thermopylae.txt";

var myfile = new RandomAccessFile(fileName, "rw");

try (var fileChannel = myfile.getChannel()) {

var text = getText();

byte[] byteData = text.getBytes(StandardCharsets.UTF_8);

ByteBuffer buffer = ByteBuffer.wrap(byteData);

fileChannel.write(buffer);

}

}

private static String getText() {

var lineSeparator = System.getProperty("line.separator");

var sb = new StringBuilder();

sb.append("The Battle of Thermopylae was fought between " +

"an alliance of Greek city-states,");

sb.append(lineSeparator);

sb.append("led by King Leonidas of Sparta, and " +

"the Persian Empire of Xerxes I over the");

sb.append(lineSeparator);

sb.append("course of three days, during the " +

"second Persian invasion of Greece.");

return sb.toString();

}

}