I am building JSON from Java object tree using [Jackson ObjectMapper](http://jackson.codehaus.org/1.8.8/javadoc/org/codehaus/jackson/map/ObjectMapper.html). Some of my Java objects are collections and sometimes they might be empty. So if they are empty that ObjectMapper generates me: `"attributes": [],` and I want to exclude those kind of empty JSON arrays from my result. My current ObjectMapper config:

```
SerializationConfig config = objectMapper.getSerializationConfig();
config.setSerializationInclusion(JsonSerialize.Inclusion.NON_NULL);
config.set(SerializationConfig.Feature.WRAP_ROOT_VALUE, true);

```

From [this post](https://stackoverflow.com/questions/8899115/how-to-not-send-an-empty-collection-in-jackson) I've read that I can use: 

```
config.setSerializationInclusion(JsonSerialize.Inclusion.NON_DEFAULT);

```

But that is generating me an error:

```
Caused by: java.lang.IllegalArgumentException: Class com.mycomp.assessments.evaluation.EvaluationImpl$1 has no default constructor; can not instantiate default bean value to support 'properties=JsonSerialize.Inclusion.NON_DEFAULT' annotation.

```

So how should I prevent those empty arrays to appear in my result?