question: @ Deprecated public static String encode ( final String s , final String encoding , BitSet safeOctets , boolean plusForSpace ) throws UnsupportedEncodingException { StringBuilder out = new StringBuilder ( s . length ( ) * 2 ) ; boolean needsEncoding ; try { needsEncoding = encode ( s , encoding , safeOctets , plusForSpace , out ) ; } catch ( UnsupportedEncodingException e ) { throw e ; } catch ( IOException e ) { throw new AssertionError ( e ) ; } if ( needsEncoding ) { return out . toString ( ) ; } else { return s ; } }
target:  URL-escapes s by encoding it with the specified character encoding, and then escaping all octets not included in safeOctets.