Provides constants for the standard character sets that are available in every JRE.
They are useful to avoid the annoying try-catch blocks for UnsupportedEncodingException
when used with String.getBytes(Charset) or String(byte, Charset). These methods are
available since Java 6.
Can also be used with InputStreamReader(InputStream, Charset) and
OutputStreamWriter(OutputStream, Charset) which are available since Java 1.4.