private static void checkQuotedString(final String quotedString) {
		boolean quotedPair=false;
		for(int i=0;i<quotedString.length();i++) {
			final char ch=quotedString.charAt(i);
			if(quotedPair) {
				checkArgument(QUOTED_PAIR.get(ch),"Invalid quoted-pair character '%s' in quoted string '%s' at %d",ch,quotedString ,i);
				quotedPair=false;
			} else if(ch==SLASH) {
				quotedPair=true;
			} else {
				checkArgument(QDTEXT.get(ch),"Invalid character '%s' in quoted string '%s' at %d",ch,quotedString ,i);
			}

		}
		checkArgument(!quotedPair,"Missing quoted-pair character in quoted string '%s' at %d",quotedString,quotedString.length());
	}
private static void checkQuotedString(final String quotedString) {
		boolean quotedPair=false;
		for(int i=0;i<quotedString.length();i++) {
			final char ch=quotedString.charAt(i);
			if(quotedPair) {
				checkArgument(QUOTED_PAIR.get(ch),"Invalid quoted-pair character '%s' in quoted string '%s' at %d",ch,quotedString ,i);
				quotedPair=false;
			} else if(ch==SLASH) {
				quotedPair=true;
			} else {
				checkArgument(QDTEXT.get(ch),"Invalid character '%s' in quoted string '%s' at %d",ch,quotedString ,i);
			}

		}
		checkArgument(!quotedPair,"Missing quoted-pair character in quoted string '%s' at %d",quotedString,quotedString.length());
	}
private static void checkQuotedString ( final String quotedString ) { boolean quotedPair = false ; for ( int i = 0 ; i < quotedString . length ( ) ; i ++ ) { final char ch = quotedString . charAt ( i ) ; if ( quotedPair ) { checkArgument ( QUOTED_PAIR . get ( ch ) , "Invalid quoted-pair character '%s' in quoted string '%s' at %d" , ch , quotedString , i ) ; quotedPair = false ; } else if ( ch == SLASH ) { quotedPair = true ; } else { checkArgument ( QDTEXT . get ( ch ) , "Invalid character '%s' in quoted string '%s' at %d" , ch , quotedString , i ) ; } } checkArgument ( ! quotedPair , "Missing quoted-pair character in quoted string '%s' at %d" , quotedString , quotedString . length ( ) ) ; }
Checks the given quoted string for illegal characters, as defined in RFC
7230, section 3.2.6.

@throws IllegalArgumentException
in case of illegal characters
@see <a href="http://tools.ietf.org/html/rfc7230#section-3.2.6">Hypertext
Transfer Protocol (HTTP/1.1): Message Syntax and Routing, Section
3.2.6</a>
Checks the given quoted string for illegal characters as defined in RFC 7230 section 3 . 2 . 6 .