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Difference between ArrayList and LinkedList in Java
Underlying Data Structure
List<String> arrayList = new ArrayList<>();
arrayList.add("Apple");
arrayList.add("Banana");
System.out.println(arrayList); // Output: [Apple, Banana]
List<String> linkedList = new LinkedList<>();
linkedList.add("Apple");
linkedList.add("Banana");
System.out.println(linkedList); // Output: [Apple, Banana]
Memory Usage
Performance: Access, Insertion, and Deletion
ArrayList: ArrayList provides faster access to elements since it uses an array data structure and elements can be accessed directly using their indices. However, insertion and deletion operations are slower in ArrayLists because, during these operations, the array may need to be resized or all elements may need to be shifted.When to Use ArrayList and LinkedList?
Use ArrayList when:
Use LinkedList when:
Summary
The below diagram summaries the between ArrayList and LinkedList in Java:Related Java Interview Articles
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