Retrieving all documents and objects in Folder (FileNet CE API)

//Retrieving all documents and objects in Folder (FileNet CE API)

public void FetchCEObjectsInFolder(Connection conn) {  //FileNet CE Connection 

try {
Domain domain = Factory.Domain.fetchInstance(conn, null, null);
ObjectStore objStore = Factory.ObjectStore.fetchInstance(domain,"OSNAME", null);
System.out.println("Object Store ="+ objStore.get_DisplayName() );

String folder= "/Test"; // Folder name

com.filenet.api.core.Folder folderOj= Factory.Folder.fetchInstance(objStore,folder, null);
System.out.println("del"+folderOj.get_Name());

DocumentSet documents = folderOj.get_ContainedDocuments(); //For documents

ReferentialContainmentRelationshipSet refConRelSet= folderOj.get_Containees(); // for objects
Iterator it = documents.iterator(); 
while(it.hasNext())
{

//Retrieving documents
Document retrieveDoc= (Document)it.next();
String name = retrieveDoc.get_Name();
System.out.println("Document Name :: "+ name);

//Retrieving Objects
ReferentialContainmentRelationship retrieveObj=(ReferentialContainmentRelationship)it.next();
IndependentObject containee=retrieveObj.get_Head();
String className= containee.getClassName();
String displayName= retrieveObj.get_Name(); 
System.out.println("Class Name = "+ className);
System.out.println("Display Name = "+ displayName);
}
} catch (Exception e) {
e.printStackTrace();
}
}