#java #collections #programming #datastructures

Java Concepts I’m Mastering – Part 12: ArrayList vs LinkedList Continuing my journey of mastering Java fundamentals. Today’s concept: ArrayList vs LinkedList — two important classes from the Java Collections Framework. Both store collections of elements, but they work differently internally. ArrayList ArrayList is backed by a dynamic array. import java.util.ArrayList; ArrayList<String> list = new ArrayList<>(); list.add("Java"); list.add("Python"); Best for: Fast random access Reading data frequently Limitation: Inserting or deleting elements in the middle can be slower. LinkedList LinkedList is implemented using nodes connected by pointers. import java.util.LinkedList; LinkedList<String> list = new LinkedList<>(); list.add("Java"); list.add("Python"); Best for: Frequent insertions and deletions Working with queues or stacks Limitation: Accessing elements by index is slower. Key Difference ArrayList LinkedList Dynamic array Doubly linked list Faster access Slower access Slower insert/d