Java Deque vs. Stack

Java Deque vs. Stack

Compare the Java Stack class and the Deque interface and learn why we should use Deque over Stack for LIFO stacks

Compare the Java Stack class and the Deque interface and learn why we should use Deque over Stack for LIFO stacks

The Java Stack class implements the stack data structure. Java 1.6 introduced the Deque interface, which is for implementing a “double-ended queue” that supports element insertion and removal at both ends.

Now, we can use the Deque interface as a LIFO (Last-In-First-Out) stack as well. Moreover, if we have a look at the Javadoc of the Stack class, we'll see:

A more complete and consistent set of LIFO stack operations is provided by the Deque interface and its implementations, which should be used in preference to this class.

In this tutorial, we're going to compare the Java Stack class and the Deque interface. Further, we'll discuss why we should use Deque over Stack for LIFO stacks.

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