question: private static State next ( final InputStream stream , final State state , final ByteArrayOutputStream line ) throws IOException { final int next = stream . read ( ) ; if ( next == - 1 ) { throw new IOException ( "chunked stream ended unexpectedly" ) ; } final State result ; switch ( state ) { case NORMAL : result = nextNormal ( state , line , next ) ; break ; case R : if ( next == '\n' ) { result = State . END ; } else { throw new IOException ( String . format ( "%s%s" , "Protocol violation: Unexpected" , " single newline character in chunk size" ) ) ; } break ; case QUOTED_STRING : result = nextQuoted ( stream , state , line , next ) ; break ; default : throw new IllegalStateException ( "Bad state" ) ; } return result ; }
target:  Get next state for FSM.