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Java Questions

1. Why do we hide data behind getters and setters?
2. What is the difference between an `ArrayList` and a `LinkedList`? When should you use them?
3. Explain insides of a `HashMap`
4. Explain insides of a `TreeMap`
5. Abstract class vs interface
6. Why calling public methods in a constructor is a bad practice?
7. Overriding vs overloading
8. Explain exceptions (checked/unchecked)
9. try-catch-finally - in which order should the exceptions be handled?
10. What are generics? Why don't just use `Object`?
11. When should reflection be used and why you should avoid using it?
12. When are annotations used?