What's the difference between removeFirst () and pop () in Deque?
Answer # 1
It's simple. The methods are equivalent. But there is a recommendation. If
Dequeis used as a deque, then
removeFirst ()is preferred. If
Dequeis used as a LIFO stack (and it is suitable for this task), then it is preferable to use
push(for stack) -
peek(for stack) -
peekFirst(for the queue).
Answer # 2
According to the documentation, the only difference is that removeFirst () throws an exception if the queue is empty
Answer # 3
pop ()method internally calls the
removeFirst ()method and calling the first or second is equivalent.