The Collections Framework, Stream Pipelines & Financial Ledger Project
Master modern Java collections: ArrayList vs LinkedList, HashMap collision resolution, parallel Streams, and build a hands-on bank ledger project.
Generics and interface contracts
Command of high-concurrency collections, lock striping in ConcurrentHashMap, and parallel stream pipelines.
Read in order, or jump to what you need.
Every lesson builds on the one before it. Open any lesson to read the explanation, run the examples, and try the practice challenges.
- 05.01Collections Architecture: ArrayList, HashSet, HashMap & Tree Structures4 min
Deconstruct the Java Collections Framework. Understand array resizing, open-addressing vs separate chaining, and red-black tree bin conversion.
- 05.02Functional Data Pipelines: Streams, Reductions & ForkJoin Parallelism4 min
Master declarative data processing with the Stream API. Contrast intermediate vs terminal operations, custom collectors, and parallelStream performance.
- 05.03Concurrent Collections: ConcurrentHashMap, CopyOnWriteArrayList, and BlockingQueues4 min
Master high-throughput thread-safe data structures in java.util.concurrent, dissecting lock striping, copy-on-write semantics, and producer-consumer queue architectures.
- 05.04Guided Project 1: Thread-Safe Bank Account Transaction LedgerProject4 min
Construct a thread-safe financial ledger. Model immutable transaction records, defend account balance invariants, and execute concurrent deposits and transfers.
Ready to move on?
Deliver Project 1: High-Throughput Bank Ledger Transaction System.
Open the module self-check