Writing Files - Beginning Java 2 SDK - page 401

import java.io.*;
import java.nio.*;
import java.nio.channels.FileChannel;
public class WriteAString {
public static void main(String[] args) {
String phrase = new String("Garbage in, garbage out\n");
String dirname = "C:/Beg Java Stuff"; // Directory name
String filename = "charData.txt"; // File name
File dir = new File(dirname); // File object for directory
// Now check out the directory
if (!dir.exists()){ // If directory does not exist
if (!dir.mkdir()){ // ...create it
System.out.println("Cannot create directory: " + dirname);
System.exit(1);
}
} else if (!dir.isDirectory()) {
System.err.println(dirname + " is not a directory");
System.exit(1);
}
// Create the filestream
File aFile = new File(dir, filename);
FileOutputStream outputFile =
null; // Place to store the stream reference
try {
outputFile = new FileOutputStream(aFile, true);
System.out.println("File stream created successfully.");
} catch (FileNotFoundException e) {
e.printStackTrace(System.err);
}
// Create the file output stream channel
FileChannel outChannel = outputFile.getChannel();
ByteBuffer buf = ByteBuffer.allocate(1024);
System.out.println("New buffer: position = " + buf.position()
+ "\tLimit = " + buf.limit() + "\tcapacity = "
+ buf.capacity());
// Load the data into the buffer
for (int i = 0; i < phrase.length(); i++) {
buf.putChar(phrase.charAt(i));
}
System.out.println("Buffer after loading: position = " + buf.position()
+ "\tLimit = " + buf.limit() + "\tcapacity = "
+ buf.capacity());