Write the implementation of the AddNode class. When writing the evaluate method for the AddNode…

Write the implementation of the AddNode class. When writing the evaluate method for the AddNode class don’t worry about how you get the right values. Just assume that those values are available if you call evaluate on the right object or objects. How it’s done is unimportant in this exercise. The implementation of the SubNode, MulNode, DivNode, NumNode, StoreNode, and RecallNode classes is left as an exercise for the reade