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Json vs Gson vs Jackson

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Json vs Gson vs Jackson

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Json stands for Java script Object Notation and Gson is like json which is developed bye Google. Jackson is also one type of Json which works similar to json. in this slide i am showing The performance comparison between Json, Gson and Jackson.

Json stands for Java script Object Notation and Gson is like json which is developed bye Google. Jackson is also one type of Json which works similar to json. in this slide i am showing The performance comparison between Json, Gson and Jackson.

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Json vs Gson vs Jackson

  1. 1. JSON vs GSON vs JACKSON - Vinaykumar Hebballi
  2. 2. Topics to cover  Overview of JSON  The working of GSON  The working of JACKSON  Comparison of JSON,GSON and JACKSON.  Conclusion 2JSON vs GSON vs JACKSON06/21/16
  3. 3. What is JSON  JSON is a lightweight data interchange format .  The most important aspects of JSON are  Simplicity  Extensibility  Interoperability  Openness and Human readability. 3JSON vs GSON vs JACKSON06/21/16
  4. 4. The working of GSON  GSON is an Java library to serialize and deserialize Java objects to (and from) JSON.  It provides two methods :-  Gson.toJson to serialize java objects.  Gson.fromJson to deserialize json objects. 4JSON vs GSON vs JACKSON06/21/16
  5. 5. GSON Example  Serialization:-  Gson gson = new Gson(); Car audi = new Car("Audi", "A4", 1.8, false); Car skoda = new Car(“Skoda", "Octavia", 2.0, true); Car[] cars = {audi, skoda}; Person johnDoe = new Person("John", "Doe", 245987453, 35, cars); System.out.println(gson.toJson(johnDoe)); 5JSON vs GSON vs JACKSON06/21/16
  6. 6. GSON Example  Deserialization:-  Gson gson = new Gson(); String json = "{"name":"John","surname":"Doe","cars": [{"manufacturer":"Audi","model":"A4","capacity":1.8,"a ccident":false}, {"manufacturer":"Škoda","model":"Octavia","capacity":2. 0,"accident":true}], "phone":245987453}"; Person johnDoe = gson.fromJson(json, Person.class); System.out.println(johnDoe.toString()); 6JSON vs GSON vs JACKSON06/21/16
  7. 7. The working of JACKSON  It is a Java library for processing JSON.  Jackson aims to be the best possible combination of fast, correct, lightweight, and friendly for developers.  Jackson offers three alternative methods:-  Stream API  Tree Model  Data Binding 7JSON vs GSON vs JACKSON06/21/16
  8. 8. JACKSON Example- Data Binding  Read the Values from JSON file:-  ObjectMapper mapper = new ObjectMapper(); User user = mapper.readValue(new File("user.json"), User.class);  Write the values To the JSON file:-  mapper.writeValue(new File("user-modified.json"), user); 8JSON vs GSON vs JACKSON06/21/16
  9. 9. JACKSON Example- Tree Model  Tree Model:-  ObjectMapper mapper = new ObjectMapper(); ArrayNode arrayNode = mapper.createArrayNode(); ObjectNode objectNode = mapper.createObjectNode(); objectNode.put("Firstname", student.getFirstName()); objectNode.put("Lastname",student.getLastName()); objectNode.put("age", student.getAge()); objectNode.put("address", student.getAddress()); objectNode.put("studentId", student.getStudentId()); arrayNode.add(objectNode); 9JSON vs GSON vs JACKSON06/21/16
  10. 10. JACKSON Example- Stream API  Writing to File:- JsonFactory f = new JsonFactory(); JsonGenerator g =f.createJsonGenerator(new File("user.json")); g.writeStartObject(); g.writeStartArray(); g.writeEndArray(); g.writeEndObject(); g.close(); 06/21/16 JSON vs GSON vs JACKSON 10
  11. 11. JACKSON Example- Stream API JsonFactory jfactory = new JsonFactory(); JsonParser jParser = jfactory.createJsonParser(new File("c://temp/user.json")); while (jParser.nextToken() != JsonToken.END_OBJECT) { if ("name".equals(fieldname)) { jParser.nextToken(); System.out.println(jParser.getText()); } if ("age".equals(fieldname)) { jParser.nextToken(); System.out.println(jParser.getIntValue()); } if ("messages".equals(fieldname)) { jParser.nextToken(); while (jParser.nextToken() != JsonToken.END_ARRAY) { System.out.println(jParser.getText()); }} 06/21/16 JSON vs GSON vs JACKSON 11
  12. 12. COMPARISON-Big File 12JSON vs GSON vs JACKSON06/21/16
  13. 13. COMPARISON-Small File 13JSON vs GSON vs JACKSON06/21/16
  14. 14. CONCLUSION  If you are dealing with big JSON files, then Jackson is your library of interest.  If you are dealing with with lots of small JSON requests then GSON is your library of interest.  If you end up having to often deal with both types of files, then JSON.simple. Neither Jackson nor GSON perform as well across multiple files sizes. 14JSON vs GSON vs JACKSON06/21/16
  15. 15. References:  www.json.org  http://wiki.fasterxml.com/JacksonHome  https://google- gson.googlecode.com/svn/trunk/gson/docs/javadocs/c om/google/gson/Gson.html 15JSON vs GSON vs JACKSON06/21/16
  16. 16. Thank you

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