The Deque is a line with double ends. This can add and remove data elements from either head or tail from a data structure. This can either be used as a FIFO, or as a LIFO. FIFO and LIFO representations are Queue and Stack in Java respectively.

That is how the diagrammatic nature of working feels. Moving on we’ve included several methods in the deque. Let’s look at this one.

Dequeuing Implementations

Since Java Deque is an interface you need to immediately implement the interface to use it in a practical manner. In the Java Collections API, you…