[Term Entry] Java Queue: .element()

* New Entry : java queue element() method term entry

* minor fixes

* Minor changes

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Author: anuj123upadhyay

content/java/concepts/queue/terms/element/element.md

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+---
+Title: '.element()'
+Description: 'Returns the head of the queue without removing it.'
+Subjects:
+  - 'Code Foundations'
+  - 'Computer Science'
+Tags:
+  - 'Collections'
+  - 'Data Structures'
+  - 'Methods'
+  - 'Queues'
+CatalogContent:
+  - 'learn-java'
+  - 'paths/computer-science'
+---
+
+In Java, the **`.element()`** method of the `Queue` interface retrieves, but does not remove, the head of the queue. Unlike `.peek()`, which returns null if the queue is empty, `.element()` throws a `NoSuchElementException` in such cases. This method provides a way to inspect the next element to be removed without modifying the queue's structure.
+
+## Syntax
+
+```pseudo
+queueName.element()
+```
+
+**Parameters:**
+
+The `.element()` method does not take any parameters.
+
+**Return value:**
+
+- Returns the head element of the queue.
+- Throws `NoSuchElementException` if the queue is empty.
+
+## Example
+
+This example demonstrates the `.element()` method with a `LinkedList` implementation of `Queue`:
+
+```java
+import java.util.LinkedList;
+import java.util.Queue;
+import java.util.NoSuchElementException;
+
+
+public class Main {
+  public static void main(String[] args) {
+    Queue<String> animals = new LinkedList<String>();
+
+      // Add elements to the queue
+      animals.offer("Dog");
+      animals.offer("Cat");
+      animals.offer("Bird");
+
+      // Use .element() to peek at the head without removing it
+      System.out.println("Head element: " + animals.element());
+      System.out.println("Queue after element(): " + animals);
+
+      // Remove elements and check head
+      animals.poll();
+      System.out.println("Head after poll: " + animals.element());
+
+      // Clear the queue
+      animals.clear();
+
+      // Attempting to use .element() on empty queue throws exception
+      try {
+        animals.element();
+      } catch (NoSuchElementException e) {
+        System.out.println("Exception: Queue is empty!");
+    }
+  }
+}
+```
+
+Here is the output:
+
+```shell
+Head element: Dog
+Queue after element(): [Dog, Cat, Bird]
+Head after poll: Cat
+Exception: Queue is empty!
+```