Java Lists Made Simple: Learn with Mindmaps & Visual Flow

The Java Collection framework gives us two major ways to organize elements: List (ordered, allows duplicates) and Set (unique, no duplicates).

 List

• Nature: Ordered sequence, index-based

• Duplicates: Allowed

• Analogy: To-do list, where you may repeat tasks

• Common Usage: When insertion order and position access matter

Set

• Nature: Unordered, no guaranteed indexing

• Duplicates: Not allowed

• Analogy: A bag of unique items, like distinct voter IDs

• Common Usage: When uniqueness is more important than order

Methods in  List and Set

Working with Lists in Java

When to use Lists or Arrays

When to use Sets and List