/** * Returns the key for a series. * * @param series the series index (in the range {@code 0} to * {@code getSeriesCount() - 1}). * * @return The key for a series. * * @throws IllegalArgumentException if {@code series} is not in the * specified range. */ @Override public Comparable getSeriesKey(int series) { // defer argument checking return getSeries(series).getKey(); }
/** * Returns the key for a series. * * @param series the series index (in the range <code>0</code> to * <code>getSeriesCount() - 1</code>). * * @return The key for a series. * * @throws IllegalArgumentException if <code>series</code> is not in the * specified range. */ public Comparable getSeriesKey(int series) { // defer argument checking return getSeries(series).getKey(); }