some questions

Some of the Java questions were:

- What are some of the methods belonging to the Object class?
- What hash function does hashCode() use?
- Can you raise or lower the access level of a method when you override it?
- What are some of your favorite design patterns?
- What is the problem with the Singleton pattern and what is a useful alternative?
- What is the purpose of having multiple generations in a garbage collection algorithm?
- How do you find the intersection of two collections?
- How do you detect a cycle in a linked list?
- Draw a class diagram for a word processor.