How to get JSONParser's default settings using Jackson in Java?

The default settings of all JSON parsers can be represented using the JsonParser.Feature enumeration . JsonParser.Feature.values() will return all features available for JSONParser , but whether a specific parser enables or disables a feature can use JsonParser's isEnabled()Method to determine.

Syntax

public static enum JsonParser.Feature extends Enum<JsonParser.Feature>

Example

import com.fasterxml.jackson.core.*;
import java.io.*;
public class JsonParserSettingsTest {
   public static void main(String[] args) throws IOException {
      String json = "[{\"name\":\"Adithya\", \"age\":\"30\"}," + "{\"name\":\"Ravi\", \"age\":\"35\"}]";
      JsonFactory jsonFactory = new JsonFactory();
      JsonParser jsonParser = jsonFactory.createParser(json);
      for(JsonParser.Feature feature : JsonParser.Feature.values()) {
         System.out.println(feature.name() + ":" + jsonParser.isEnabled(feature));
      }
   }
}

Output

AUTO_CLOSE_SOURCE:true
ALLOW_COMMENTS:false
ALLOW_YAML_COMMENTS:false
ALLOW_UNQUOTED_FIELD_NAMES:false
ALLOW_SINGLE_QUOTES:false
ALLOW_UNQUOTED_CONTROL_CHARS:false
ALLOW_BACKSLASH_ESCAPING_ANY_CHARACTER:false
ALLOW_NUMERIC_LEADING_ZEROS:false
ALLOW_NON_NUMERIC_NUMBERS:false
ALLOW_MISSING_VALUES:false
ALLOW_TRAILING_COMMA:false
STRICT_DUPLICATE_DETECTION:false
IGNORE_UNDEFINED:false
INCLUDE_SOURCE_IN_LOCATION:true

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