public static void main(String[] arguments) {
try {
// read byte data into a byte buffer
String data = "friends.dat";
FileInputStream inData = new FileInputStream(data);
FileChannel inChannel = inData.getChannel();
long inSize = inChannel.size();
ByteBuffer source = ByteBuffer.allocate((int) inSize);
inChannel.read(source, 0);
source.position(0);
System.out.println("Original byte data:");
for (int i = 0; source.remaining() > 0; i++) {
System.out.print(source.get() + " ");
}
// convert byte data into character data
source.position(0);
Charset ascii = Charset.forName("US-ASCII");
CharsetDecoder toAscii = ascii.newDecoder();
CharBuffer destination = toAscii.decode(source);
destination.position(0);
System.out.println("\n\nNew character data:");
for (int i = 0; destination.remaining() > 0; i++) {
System.out.print(destination.get());
}
System.out.println();
} catch (FileNotFoundException fne) {
System.out.println(fne.getMessage());
} catch (IOException ioe) {
System.out.println(ioe.getMessage());
}
}
public static String readFile(String filename) {
String s = "";
FileInputStream in = null;
// FileReader in = null;
try {
File file = new File(filename);
byte[] buffer = new byte[(int) file.length()];
// char[] buffer = new char[(int) file.length()];
in = new FileInputStream(file);
// in = new FileReader(file);
in.read(buffer);
s = new String(buffer);
in.close();
} catch (FileNotFoundException fnfx) {
System.err.println("File not found: " + fnfx);
} catch (IOException iox) {
System.err.println("I/O problems: " + iox);
} finally {
if (in != null) {
try {
in.close();
} catch (IOException ignore) {
// ignore
}
}
}
return s;
}