How to get all changesets for each single component

Hi all,

i want to get all changesets from a component from the Source Control in RTC.
First i have list all streams and then every component of each single stream.
See the code below:

//List all Stream for each single ProjectArea

 IWorkspaceManager workspaceManager = SCMPlatform.getWorkspaceManager(teamRepository);
 IWorkspaceSearchCriteria stcriteria = IWorkspaceSearchCriteria.FACTORY.newInstance();
                   
 stcriteria.setKind(IWorkspaceSearchCriteria.STREAMS);
 stcriteria.setPartialOwnerNameIgnoreCase(projectArea.getName());             
                   
 List <IWorkspaceHandle> workspaceHandles = workspaceManager.findWorkspaces(stcriteria,Integer.MAX_VALUE,monitor);
IWorkspaceConnection workspaceConnection = workspaceManager.getWorkspaceConnection(workspaceHandles.get(0),monitor);
                       
System.out.println("Streams: ");
System.out.println(workspaceConnection.getName());


 //List all Components for each single ProjectArea
                   
List components = teamRepository.itemManager().fetchCompleteItems(workspaceConnection.getComponents(), IItemManager.DEFAULT, null);
                    for (Iterator<IComponent> it = components.iterator(); it.hasNext();) {
                        IComponent component = it.next();
                        System.out.println("Components: ");
                        System.out.println(component.getName());
                    }

List components = teamRepository.itemManager().fetchCompleteItems(workspaceConnection.getComponents(), IItemManager.DEFAULT, null);
                    for (Iterator<IComponent> it = components.iterator(); it.hasNext();) {
                        IComponent component = it.next();
                        System.out.println("Components: ");
                        System.out.println(component.getName());                       
                    }

Now i try to get the changesets of the components. I want to know the changesets after one defined date. I tried the following thing:

IChangeSetSearchCriteria criteria = IChangeSetSearchCriteria.FACTORY.newInstance();
criteria.setModifiedAfter(timestamp);              /// the timestamp is for example 01.10.2015
.......need help here.......= workspaceManager.findChangeSets(criteria,512, null);



Is it right? but now i don't know how to handle the changeset. How can i list and view them?
It would be very nice, if someone can help me!

Best Regards!