g1 = new BoxAndWhiskerXYToolTipGenerator("{0} --> {1} {2}",
                new SimpleDateFormat("yyyy"), new DecimalFormat("0.0"));
        g2 = new BoxAndWhiskerXYToolTipGenerator("{1} {2}",
                new SimpleDateFormat("yyyy"), new DecimalFormat("0.0"));
        assertFalse(g1.equals(g2));
        g2 = new BoxAndWhiskerXYToolTipGenerator("{0} --> {1} {2}",
                new SimpleDateFormat("yyyy"), new DecimalFormat("0.0"));
        assertTrue(g1.equals(g2));