Ok, now I see these classes are included within the examples.

Anyway I was hoping for more "Maven" way - I don't feel comfortable neither including this 3rd party to my source code nor creating and deploying artifact from those.

I've resolved the issue with this simple work-around, still using json-simple, but substituting standard HashMap with LinkedHashMap.

public class JSONOrderedObject extends LinkedHashMap<String, Object> implements Map<String, Object>, JSONAware, JSONStreamAware {
                

    @Overridepublic String toJSONString() {
                
        return JSONObject.toJSONString(this);}

    @Overridepublic void writeJSONString(Writer writer) throws IOException {
                
        JSONObject.writeJSONString(this, writer);}
}

@filip.balas

If you download the Java code examples from the downloads tab, you will find the libraries we used, under \DSS2_Java_Examples\src\org\json.

Note these Java samples are currently being rewritten to make them easier to understand. The first one in the new style is DSS2SearchFirRICClientV2.java. The others will come soon.

Based on JSONOrderedObject source code, it seem that the class is written using pure java classes(no using any JSON library classs) as shown below:

@filip.balas

Thanks for sharing your work around solution. That's great! The org.json.JSONOrderedObject class is a modified version of the org.json.JSONObject, to help maintain the order of the properties in the JSON request object (yes, as you noted, the exact order of the properties is required for most of the requests). The main difference is the org.json.JSONOrderedObject class uses LinkedHashMap instead on Map.