String 2 ASCII Converter

String2Ascii.java

/*
Many network protocols and files store their characters with a byte-oriented character set such as ISO-8859-1 (ISO-Latin-1). However, Java's native character encoding is Unicode.
This example demonstrates how to convert ISO-8859-1 encoded bytes in a ByteBuffer to a string in a CharBuffer and visa versa.

In the example above, the encoding and decoding methods created new ByteBuffers into which to encode or decoding the data. Moreover, the newly allocated ByteBuffers are non-direct (Determining If a ByteBuffer Is Direct). The encoder and decoder provide methods that use a supplied ByteBuffer rather than create one. Here's an example that uses these methods:

*/


// Create the encoder and decoder for ISO-8859-1
Charset charset = Charset.forName("ISO-8859-1");
CharsetDecoder decoder = charset.newDecoder();
CharsetEncoder encoder = charset.newEncoder();

try {
    // Convert a string to ISO-LATIN-1 bytes in a ByteBuffer
    // The new ByteBuffer is ready to be read.
    ByteBuffer bbuf = encoder.encode(CharBuffer.wrap("a string"));

    // Convert ISO-LATIN-1 bytes in a ByteBuffer to a character ByteBuffer and then to a string.
    // The new ByteBuffer is ready to be read.
    CharBuffer cbuf = decoder.decode(bbuf);
    String s = cbuf.toString();
} catch (CharacterCodingException e) {
}

// Create a direct ByteBuffer.
// This buffer will be used to send and recieve data from channels.
ByteBuffer bbuf = ByteBuffer.allocateDirect(1024);

// Create a non-direct character ByteBuffer
CharBuffer cbuf = CharBuffer.allocate(1024);

// Convert characters in cbuf to bbuf
encoder.encode(cbuf, bbuf, false);

// flip bbuf before reading from it
bbuf.flip();

// Convert bytes in bbuf to cbuf
decoder.decode(bbuf, cbuf, false);

// flip cbuf before reading from it
cbuf.flip();