question: private PDFObject readHexString ( int objNum , int objGen , PDFDecrypter decrypter ) throws IOException { int val ; StringBuffer sb = new StringBuffer ( ) ; while ( ( val = readHexPair ( ) ) >= 0 ) { sb . append ( ( char ) val ) ; } if ( buf . get ( ) != '>' ) { throw new PDFParseException ( "Bad character in Hex String" ) ; } return new PDFObject ( this , PDFObject . STRING , decrypter . decryptString ( objNum , objGen , sb . toString ( ) ) ) ; }
target:  read a < hex string >.  The initial < has already been read.