These questions are java

1. List three features that make using an iteration preferable to a recursion in printing Happy Birthday 10 times.

2. Evaluate why a recursion method is useful for calculating the greatest common divisor.

3. Using the gcd method, Aidan coded a recursive program to find the common divisor for 43,822 and 52,003. Instead, he got a StackOverflowError. Infer what happened.

4. Identify what must be changed to make this a true statement: To search a sorted array for a given value, you must define a base case to reduce the size of the problem and general cases to implement the base case.