Expression Tree Tutorial - Knowledge Base (KB)

Recursively create a tree

I am trying to recursively create an expression tree. Whenever this function receives other expression variables it runs perfectly fine. But whenever it receives an integer (or in this case a string that takes it to the else statement) it crashes my progr...

Recursive evaluate() in expression tree class

I am new in Java and trying to add evaluate method to my class. The ExpTree class and its testing program is given to me. I wrote my code as I learned in the class, but do not know why it does not work....An evaluate() method, which returns the arithmetic...