Round III

What do you know about deadlock?

What is yield() in threads?

what is a volatile variable in java?

How will you implement Least Recently Used Cache using java.util.Collections? Told a logic like add a flag to each element with last accessed time and can use this to check the newly accessed elemnt's time and implement it. If there are more elements, this method has to serially see all elements, which is not feasible.

What are indexes? what are inner and outer joins?

What is "open closed" priciple?(Open for extension and closed for modification)

What is dependecy injection? He stressed on getting answers from me for this. He gave some examples too.

What is decorator design pattern?