What is SQL Injection? Serialization vs Synchronized. Interface vs Abstract. Queue vs Stack, Vector vs ArrayList. Array vs ArrayList. What is a virtual function? When are these used: static, transient, protected, Iterator? Name 4 principles of Polymorphism. Can a lock be acquired on a class? How do you secure a web service? What is operator overload? Explain an ENUM. Which is more expensive? Array or LinkedList.
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Answered most correctly. Didn't know some.