Book Image

Instant GSON

By : Sandeep Patel
Book Image

Instant GSON

By: Sandeep Patel

Overview of this book

GSON is a specialized Java-based library for handling JSON data, developed by Google. GSON demonstrates an efficient use of CPU time, memory efficiency, the library, and developer productivity. This book will help you implement GSON in your Java project. Instant GSON is a practical, hands-on guide that provides you with all the implementation features of the GSON API through coded examples, which will help you take advantage of the real power that is behind the GSON API, and give you a good grounding to use it in your projects. Instant GSON starts with an introduction to the JSON data format and GSON library. It will take you through the configuration steps required to set up a GSON-based Java project. You will learn about the top features of the GSON library, which includes handling generic type and nested class objects in Java, implementing versioning support, exclusion strategies, and pretty printing. At the end of the book you will find some useful references to articles, blogs, and active communities.
Table of Contents (7 chapters)

Top 12 features you need to know about

In this section, you will learn about the top features supported by the GSON library. You will also learn about how to implement these features.

Java objects support

Objects in GSON are referred as types of JsonElement:

The GSON library can convert any user-defined class objects to and from the JSON representation. The Student class is a user-defined class, and GSON can serialize any Student object to JSON.

The class is as follows:

public class Student {

private String name;

private String subject;

privateint mark;

public String getName() {
return name;

public void setName(String name) { = name;

public String getSubject() {
return subject;

public void setSubject(String subject) {
this.subject = subject;

public int getMark() {
return mark;

public void setMark(int mark) {
this.mark = mark;


The code for is as follows: