Gain insights into Java Collections Framework. Delve into lists, sets, and hashmaps. Learn about data modification, sorting, thread-safety, and internal workings for efficient usage.

Collection is one of the most important topics for Java programming. Without the proper knowledge of every collection type in Java, it becomes difficult for you to decide which option to pick in a particular scenario.

This course will give you a great understanding of all collection types available in the Collections Framework like lists, linked lists, sets, and hashmaps. 

After completing this course, you will know how data can be modified within a collection, how to sort a collection, and how it can be made thread-safe. You will also cover the internal working of each Java collection so you can work with them more efficiently.

Collections in Java

# Fetching element from a LinkedList
Let's discuss the different methods to fetch an element from LinkedList.
## Fetching the first element
We can use the `getFirst()` method to fetch the first element in the list. If the **LinkedList** is empty, then `NoSuchElementException` is thrown.

## Fetching the last element
We can use the `getLast()` method to fetch the last element in the list. If the **LinkedList** is empty, then `NoSuchElementException` is thrown.

## Fetching an element at a particular index
We can fetch an element at a particular index by using the `get(int index)` method. The index should be more than zero and less than the size of the **LinkedList**; otherwise, `IndexOutOfBoundsException` is thrown.


Let's discuss how to fetch and remove elements from LinkedList.


LinkedList: Fetching and Removing

Let's discuss how to fetch and remove elements from LinkedList.

Let's Begin

Lists in Java

LinkedList in Java

CopyOnWriteArrayList in Java

Sets in Java

TreeSet in Java

HashMap In Java

TreeMap in Java

LinkedHashMap in Java

Additional Map Implementations

Arrays Class

Collections Class

LinkedList: Fetching and Removing

Fetching element from a LinkedList

Fetching the first element

Fetching the last element