I need help creating this last part of my java program. Here are the instructions below:

The TieredCake class should also be derived from the Cake class. This kind of cake has two tiers, so it is constructed from two Cake items. The price of a tiered cake is the sum of the prices of the two individual cakes plus 10% of the total. The TieredCake constructor should take two Cake objects for the lower and upper tiers, in that order. The name of a TieredCake is the name of the lower tier concatenated with the String with an upper tier of and the name of the upper tier. Note that since TieredCake extends Cake, the tiers of a TieredCake may themselves be TieredCakes, or they may be ToppedCakes or just Cakes.