Mastering Deque: Element and Peek Methods Explained | Java Collection Framework

Welcome to our Java Collection Framework tutorial series! In this video, we'll delve into the `element()` and `peek()` methods of the Deque interface in Java.

**Understanding Deque Operations:**
Deque, also known as a Double Ended Queue, is a versatile data structure in Java that allows insertion and removal of elements from both ends. The `element()` and `peek()` methods are used to retrieve the first element of the Deque without removing it.

**Using `element()`:**
The `element()` method retrieves, but does not remove, the head (first element) of the Deque. If the Deque is empty, it throws a NoSuchElementException.

**Using `peek()`:**
On the other hand, the `peek()` method retrieves, but does not remove, the head of the Deque, or returns null if the Deque is empty.

**Practical Examples:**
We'll provide practical examples demonstrating how to use these methods effectively to retrieve the first element from a Deque without removing it. You'll learn when to use `element()` and when to use `peek()` based on your specific use case.

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Deque (Element & Peek Methods) | Java Collection Framework

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