code: public void dropAllDataMongoDBCollection(String collectionName) {
          DBCollection db = getMongoDBCollection(collectionName);
          DBCursor objectsList = db.find();
          try {
              while (objectsList.hasNext()) {
                  db.remove(objectsList.next());
              }
          } finally {
              objectsList.close();
          }
      }
docs: Drop all the data associated to a MongoDB Collection.
  
  @param collectionName