/** * Generates the tool tip text for an item in a dataset. * * @param dataset the dataset (<code>null</code> not permitted). * @param series the series index (zero-based). * @param item the item index (zero-based). * * @return The tooltip text (possibly <code>null</code>). */ public String generateToolTip(XYDataset dataset, int series, int item) { return generateLabelString(dataset, series, item); }
/** * Generates the tool tip text for an item in a dataset. * * @param dataset the dataset ({@code null} not permitted). * @param series the series index (zero-based). * @param item the item index (zero-based). * * @return The tooltip text (possibly {@code null}). */ @Override public String generateToolTip(XYDataset dataset, int series, int item) { return generateLabelString(dataset, series, item); }
public String generateLabelString(XYDataset dataset, int series, int item) { return super.generateLabelString(dataset, series, item).replaceAll("null", "?"); } });