import org.boon.json.JsonSerializer;
import org.boon.json.JsonSerializerFactory;
import org.boon.json.annotations.JsonViews;

public class BoonTester {
   public static void main(String args[]) {
      JsonSerializer serializerPublic = new JsonSerializerFactory()
         .useAnnotations()
         .setView( "public" )
         .create();
      
      JsonSerializer serializerInternal = new JsonSerializerFactory()
         .useAnnotations()
         .setView( "internal" )
         .create();
      
      Student student = new Student(1,"Mark", 20);
      String jsonString = serializerPublic.serialize( student ).toString();
      System.out.println(jsonString);         
      jsonString = serializerInternal.serialize( student ).toString();
      System.out.println(jsonString);
   }
}
class Student {   
   public int id;   
   public String name;
   @JsonViews( ignoreWithViews = {"public"}, includeWithViews = {"internal"})
   public int age;

   Student(int id, String name, int age) {
      this.id = id;
      this.name = name;
      this.age = age;
   }
}

{"id":1,"name":"Mark"}
{"id":1,"name":"Mark","age":20}