How to serialize Object to JSON?

Question

I need to serialize some objects to a JSON and send to a WebService. How can I do it using the org.json library? Or I'll have to use another one? Here is the class I need to serialize:

public class PontosUsuario {      public int idUsuario;     public String nomeUsuario;     public String CPF;     public String email;     public String sigla;     public String senha;     public String instituicao;      public ArrayList<Ponto> listaDePontos;       public PontosUsuario()     {         //criando a lista         listaDePontos = new ArrayList<Ponto>();     }  } 

I only put the variables and the constructor of the class but it also have the getters and setters. So if anyone can help please

Answer 1

Easy way to do it without annotations is to use Gson library

Simple as that:

Gson gson = new Gson(); String json = gson.toJson(listaDePontos); 

Answer 2

One can use the Jackson library as well.

Add Maven Dependency:

<dependency>   <groupId>com.fasterxml.jackson.core</groupId>    <artifactId>jackson-core</artifactId> </dependency> 

Simply do this:

ObjectMapper mapper = new ObjectMapper(); String json = mapper.writeValueAsString( serializableObject );