Like all OsidLists, ObstacleList provides a means for accessing Obstacle elements sequentially either one at a time or many at a time. Examples:

                     
                     
                     while (ol.hasNext()) {
                          Obstacle obstacle = ol.getNextObstacle();
                     }
                     
                                 
                     
                

                     
                     
                     while (ol.hasNext()) {
                          Obstacle[] obstacles = ol.getNextObstacles(ol.available());
                     }