### Question:
Palette { final void cache(final ImageTypeSpecifier its) { samples = its.getSampleModel(); colors = new PaletteDisposer.Reference(this, its.getColorModel()); specifier = new WeakReference<ImageTypeSpecifier>(its); } protected  Palette(final PaletteFactory factory, final String name,
                      final int numBands, final int visibleBand); synchronized ColorModel getColorModel(); abstract ImageTypeSpecifier getImageTypeSpecifier(); RenderedImage getImage(final Dimension size); @SuppressWarnings("deprecation") void show(); @Override int hashCode(); @Override boolean equals(final Object object);  }### Answer:
@Test public void testCache() { final PaletteFactory factory = PaletteFactory.getDefault(); final Palette first = factory.getPalettePadValueFirst("rainbow", 100); final Palette second = factory.getPalettePadValueFirst("bell", 100); final Palette third = factory.getPalettePadValueFirst("rainbow", 100); assertEquals (first, third); assertSame (first, third); assertNotSame(first, second); }