The first thing to learn in JSON-B API, is basically mapping Java objects from/to JSON strings. The entry point to use mapping and other JSON-B features are the Jsonb object. The Jsonb object is instantiated through a JsonbBuilder class, as will be shown in the following example.
After creating the jsonb object, the methods toJson() and fromJson() serialize an object to a JSON string and deserialize an object from a JSON string, respectively. In the following example, we will show how to serialize a movie object into a JSON string:
public class Movie {
private long id;
private String title;
// setters and getters here
}
// instantiating a jsonb object
Jsonb jsonb = JsonbBuilder.create();
jsonb.toJson(jsonb);
//creating a movie object
Movie movie = new Movie();
movie.setId(15);
movie.setTitle("Beauty and The Beast");
// mapping the movie object into a json string
String json = jsonb.toJson(movie);
System.out.println(json); By running the...