question: public static String removeNewLineChars ( String s ) { String retString = null ; if ( ( s != null ) && ( s . length ( ) > 0 ) && ( s . indexOf ( '\n' ) != - 1 ) ) { char [ ] chars = s . toCharArray ( ) ; int len = chars . length ; StringBuffer sb = new StringBuffer ( len ) ; for ( int i = 0 ; i < len ; i ++ ) { char c = chars [ i ] ; if ( c != '\n' ) { sb . append ( c ) ; } } retString = sb . toString ( ) ; } else { retString = s ; } return retString ; }
target:  Removes new line characters (useful for Base64 decoding)