Overview of java.util.Collection Hierarchy

Intermediate13 min read•Updated: 2026-10-22

📚 Overview of the Java Collections Framework (JCF)

Introduction

The Java Collections Framework (JCF) provides a unified architecture for storing and manipulating groups of objects. Located in java.util, it provides standardized data structures and algorithms with high performance and type safety.

🏛️ Core Interfaces Hierarchy

                        Iterable<E>
                            │
                      Collection<E>
          ┌─────────────────┼─────────────────┐
          ▼                 ▼                 ▼
       List<E>           Set<E>            Queue<E>
    (Ordered, dupes) (Unique items)     (FIFO Processing)
    ├── ArrayList     ├── HashSet       ├── ArrayDeque
    └── LinkedList    └── TreeSet       └── PriorityQueue
10 
 [ Note: Map<K,V> is part of JCF but does NOT extend Collection! ]
 ├── HashMap
 └── TreeMap

Next Lesson

List Interface: ArrayList vs LinkedList (Performance & Internal Arrays)

Continue learning with hands-on practice, examples, and exercises in the upcoming topic.

Related Lessons

Previous Lesson	Next Lesson
Throwing Exceptions with throw, throws, and Creating Custom Exception Classes	List Interface: ArrayList vs LinkedList (Performance & Internal Arrays)

Practice Quiz

Test your understanding of this lesson with 1 questions. Each question has one correct answer.

Previous Next

PreviousPrevNext

MSK Institute • Shikohabad

Loading Page Content...

Preparing courses, live labs, and learning resources.सामग्री लोड हो रही है, कृपया प्रतीक्षा करें...

Connecting serverPlease wait...

💻 Practical Labs🚀 Free Demo📜 Verified Certificates

List Interface: ArrayList vs LinkedList (Performance & Internal Arrays)

Overview of java.util.Collection Hierarchy

Intermediate13 min read•Updated: 2026-10-22

Study Materials

📚 Overview of the Java Collections Framework (JCF)

Introduction

🏛️ Core Interfaces Hierarchy

                        Iterable<E>
                            │
                      Collection<E>
          ┌─────────────────┼─────────────────┐
          ▼                 ▼                 ▼
       List<E>           Set<E>            Queue<E>
    (Ordered, dupes) (Unique items)     (FIFO Processing)
    ├── ArrayList     ├── HashSet       ├── ArrayDeque
    └── LinkedList    └── TreeSet       └── PriorityQueue
10 
 [ Note: Map<K,V> is part of JCF but does NOT extend Collection! ]
 ├── HashMap
 └── TreeMap

Next Lesson

List Interface: ArrayList vs LinkedList (Performance & Internal Arrays)

Continue learning with hands-on practice, examples, and exercises in the upcoming topic.

Related Lessons

Previous Lesson	Next Lesson
Throwing Exceptions with throw, throws, and Creating Custom Exception Classes	List Interface: ArrayList vs LinkedList (Performance & Internal Arrays)

Practice Quiz

Test your understanding of this lesson with 1 questions. Each question has one correct answer.

Previous Next