What is the Java equivalent of C++ deque?

Question

in C++ all I had to do was

#include <queue> -> including
queue<int> a; -> defining
a.push(1); ->using

but in java I found very difficult to use simple deque what should I do...? more specifically, How should I code to simply do the same steps as I did in C++; including, defining, using.

even more specifically, I want to make a deque so that I can add any integer in the deque at front or back. and print whole numbers in that deque by the size of the deque

Answer 1

The current answers suggest that Java's java.util.LinkedList is the Java translation of C++'s std::deque. While LinkedList does have an interface that is roughly equivalent to that of std::deque, it does not provide the complexity guarantees that std::deque does. In particular, std::deque guarantees O(1) lookup by index (random access), while LinkedList has O(n) lookup. In this sense (the sense in which an experienced C++ user views std::deque), Java's LinkedList is nothing at all like std::deque (though it is very much like std::list). This thread provides a better answer to the question "What is is the Java equivalent of C++ deque". To sum up, there is no equivalent in the standard Java library.