← Exit to Module 11: Collections Framework Deep Dive lessons
Module progress · 0%Lesson · 12 min
Module 11: Collections Framework Deep Dive
Lesson focusCollections Utility Class
Explore helper methods like `Collections.sort`, `shuffle`, `unmodifiableList`, and `synchronizedList`.
01 · 14 minCollections Hierarchy OverviewLocked02 · 18 minList Implementations: ArrayList, LinkedList, VectorLocked03 · 20 minSet Implementations: HashSet, TreeSet, LinkedHashSetLocked04 · 22 minMap Implementations: HashMap, TreeMap, LinkedHashMapLocked05 · 16 minQueue & Deque ImplementationsLocked06 · 12 minComparable vs ComparatorLocked07 · 12 minCollections Utility ClassLocked08 · 14 minIteration Techniques & Fail-Fast BehaviorLocked09 · 35 minMini-Project: Contact Management SystemLocked
Use unmodifiable wrappers to return read-only views without copying data.
Use Collections.frequency, disjoint, and reverseOrder to reduce boilerplate.
Prefer List.copyOf/Set.copyOf (Java 10+) for concise immutable collections.