public JsonNode readTree(Reader reader) throws JsonParseException, JsonMappingException, IOException {
        return (objectMapper.readTree(reader));
    }
public JsonNode readTree ( Reader reader ) throws JsonParseException , JsonMappingException , IOException { return ( objectMapper . readTree ( reader ) ) ; }
Reads and parses the JSON data on the specified Reader instance to a JsonNode tree representation.

@param reader the Reader instance that contains the JSON data
@return a JsonNode instance containing the parsed JSON
@throws JsonParseException when an error occurs parsing the provided JSON
@throws JsonMappingException if a JSON error occurs
@throws IOException if an error occurs reading the JSON data