final Charset utf8Charset = Charset.forName("UTF-8");
final InputStream in = new ByteArrayInputStream(aBlockComment.getBytes(utf8Charset));
final ANTLRInputStream input = new ANTLRInputStream(in);
final JavadocLexer lexer = new JavadocLexer(input);
// remove default error listeners
lexer.removeErrorListeners();
// add custom error listener that logs parsing errors
lexer.addErrorListener(mErrorListener);
final CommonTokenStream tokens = new CommonTokenStream(lexer);
final JavadocParser parser = new JavadocParser(tokens);