Great job learning about the collections framework! In this lesson we’ve covered:

• The collection framework hierarchy and its core interfaces.
• The root Collection interface of the hierarchy.
• The List interface and its ArrayList and LinkedList implementations.
• The Set interface and its HashSet, LinkedHashSet, and TreeSet implementations.
• The Queue interface and its LinkedList and PriorityQueue implementations.
• The Deque interface and its LinkedList and ArrayDeque implementations.
• The Map interface and its HashMap, LinkedHashMap, and TreeMap implementations.
• The Collections utility algorithm static methods like sort(), binarySearch(), max(), min(), and reverse().
• Collection stream pipelines and aggregate operations with lambdas.

Knowing these topics will help you create enterprise-level programs and handle data more efficiently by not needing to “reinvent the wheel” and fully utilize the power of the collections framework.