Parser to parse unknown XML Schema in java

I tried understanding all other answers in stackoverflow.But I am not able to relate those answers to my question.

When I call a web service, I get "response". I get schema by response.getSchema(); (return type String). That schema is unknown. We don't know what data we get in that schema. I need to use a 3rd party parser, so that when I give the above string to one method in that parser it should return all the elements in that schema and then I can print the required elements.

I don't want to start parsing the schema myself. Is there a way I can do this? (Does it even make any sense?). Sorry If I am totally wrong. (using Axis2/eclipse)