In this post under Gson, I will explain with example the purpose of “@SerializedName” annotation. By default when we serialize an object to Json, the class field names are used as key names in the Json. For example if we have the below class structure JavaBean class structure package defaultPackage;import com.google.gson.annotations.SerializedName;import java.util.List;public class Author {…… Continue reading @SerializedName annotation example
Category: General
InstanceCreator example
In this post under Gson, I will show with example the purpose of “InstanceCreator” interface provided by Gson framework. Whenever we define a Pojo class, we don’t add constructor of our own, as we use Java provided default no argument constructor to create an object of the class. But sometimes we end up adding constructors…… Continue reading InstanceCreator example
ExclusionStrategy example during deserialization of object
In this post under Gson, I will explain how we can exclude certain fields of a json data from being deserialized with an example. Below is the Employee class structure that will be used to create an instance and its field are set with the values obtained from Employee.json file. Employee class public class Employee…… Continue reading ExclusionStrategy example during deserialization of object
ExclusionStrategy example during serialization of object
In this post under Gson, I will explain how we can exclude certain fields of a class from being serialized with an example. Below is the Employee class structure that we want to serialize Employee public class Employee { private int id; private String name; private int ssn; private boolean terminated; public int getId() {…… Continue reading ExclusionStrategy example during serialization of object
Annotation Since and setVersion method
In this post under Gson, I will explain with an example how to use @Since annotation. The @Since annotation is used in combination with “GsonBuilder.setVersion” method. The annotation has no effect if it is not used along with “GsonBuilder.setVersion” method. The @Since annotation is used for the fields of the class and it accepts a…… Continue reading Annotation Since and setVersion method
Annotation Until and setVersion method
In this post under Gson, I will explain with an example how to use @Until annotation. The @Until annotation is used in combination with “GsonBuilder.setVersion” method. The annotation has no effect if it is not used along with “GsonBuilder.setVersion” method. The @Until annotation is used for the fields of the class and it accepts a…… Continue reading Annotation Until and setVersion method
FieldNamingStrategy Example
In my previous post “FieldNamingPolicy Example”, I explained with an example how to change the naming convention using out of the box provided standard naming conventions. In this post, I will explain with an example how to create your own custom naming conventions and configure the Gson to use it. To create our own custom…… Continue reading FieldNamingStrategy Example
FieldNamingPolicy Example
In this post under Gson, I will show how to change the naming convention of field names when serialized to JSON format. I will show how to change the naming convention from out of the box provided standard naming conventions. Gson out of the box provides the below naming conventions as part of the enum…… Continue reading FieldNamingPolicy Example
Configuring Gson to serialize objects with fields having null value
Whenever we serialize a java object to JSON using Gson framework, by default fields with null values are ignored. As shown in the below code Main code import com.google.gson.Gson; public class GsonDemo7 { public static void main(String[] args) { Student student = new Student(); student.setId(1); student.setName(“name1”); student.setRollnum(100); student.setDate(null); Gson gson = new Gson(); String result…… Continue reading Configuring Gson to serialize objects with fields having null value
Using Custom DateFormat
In this post, under GSON, I will explain how to use custom date format when serializing Java object containing date information to json format. We can change this format globally, globally meaning the custom format will be applied to all objects that are serialized using Gson instance, created using the custom date format. Below is…… Continue reading Using Custom DateFormat
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