How to do it...

You need to perform the following steps to try this recipe:

1. First, we define a JSON message to represent the User object:

{
  "user": {
    "email": "elder@eldermoraes.com",
    "name": "Elder",
    "profile": [
      {
        "id": 1
      },
      {
        "id": 2
      },
      {
        "id": 3
      }
    ]
  }
}

2. Now, we create a method to read it and print the values we want:

public class JPointer {

    public static void main(String[] args) throws IOException{
        try (InputStream is = 
        JPointer.class.getClassLoader().getResourceAsStream("user.json");
                JsonReader jr = Json.createReader(is)) {

            JsonStructure js = jr.read();
            JsonPointer jp = Json.createPointer("/user/profile");
            JsonValue jv = jp.getValue(js);
            System.out.println("profile: " + jv);
        }
    }
}

3. The execution of this code prints the following:

profile: [{"id":1},{"id":2},{"id":3}]