ArrayList in Java | List in Java | Java Tutorial for Beginners
ArrayList in Java | List in Java | Java Tutorial for Beginners
🔍 Ready to delve into Java's List interface and its concrete implementations? This comprehensive guide has everything you need to become an expert!
In this video, we'll explore Java's List interface and its concrete implementations like:
#1
ArrayList: This class provides a resizable array implementation of the List interface. It dynamically adjusts its size as elements are added or removed, making it efficient for random access and iteration.
#2
LinkedList: LinkedList is a doubly-linked list implementation of the List interface. It's ideal for frequent insertion and deletion operations, as it maintains references to both the next and previous elements.
#3
Vector: Vector is a synchronized implementation of the List interface. It's similar to ArrayList but provides thread-safe operations, making it suitable for multi-threaded applications.
#4
Stack: Stack extends Vector and represents a last-in, first-out (LIFO) data structure. It supports push (add) and pop (remove) operations, making it useful for implementing algorithms like depth-first search.
We'll dive into the essential methods and unique characteristics of each concrete class, including:
✅ add(element): Adds the specified element to the end of the list.
✅ addAll(collection): Adds all elements from the specified collection to the list.
✅ clear(): Removes all elements from the list.
✅ contains(element): Checks if the list contains the specified element.
✅ get(index): Retrieves the element at the specified index in the list.
✅ indexOf(element): Returns the index of the first occurrence of the specified element in the list.
✅ isEmpty(): Checks if the list is empty.
✅ iterator(): Returns an iterator over the elements in the list.
✅ listIterator(): Returns a list iterator over the elements in the list.
✅ remove(element): Removes the first occurrence of the specified element from the list or specific object.
✅ retainAll(collection): Retains only the elements in the list that are present in the specified collection.
✅ size(): Returns the number of elements in the list.
✅ toArray(): Returns an array containing all elements in the list.
Plus, we'll demystify the diamond operator when creating ArrayList objects, ensuring your code is both concise and powerful. 💎
Whether you're a Java enthusiast or a seasoned developer, this video is a treasure trove of knowledge to enhance your understanding of Java List interface and its implementations.
🕒 Timestamps 🕒
00:00 - Introduction to List in Java
00:24 - What is List in Java
00:43 - Difference between all List implementations - ArrayList, LinkedList
01:25 - Program for ArrayList in Java
02:35 - List Interface methods
06:16 - End
🔗 Relevant Links to Oracle documentation 🔗
https://docs.oracle.com/javase/8/docs... - List in Java & ArrayList in Java oracle documentation
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