asmhatreandClaude Sonnet 5
bc5153d2a5
Adds the executors module: shutdown() vs shutdownNow(), the graceful two-phase shutdown pattern, AutoCloseable/try-with-resources (JDK 19+), newVirtualThreadPerTaskExecutor() timing vs a bounded pool, and the submit()-without-get() lost-exception trap. 5 runnable demos, 1 JUnit correctness test class (23 tests), 6 captured output transcripts. Co-Authored-By: Claude Sonnet 5 <[email protected]> Claude-Session: https://claude.ai/code/session_01FhzLY5p6okFva3qsnsRyvM
java-core-examples
Runnable companion code for ankurm.com's Java-core / concurrency series. One Maven module per article; each module's own README has that article's version table, quickstart, and traps.
| Module | Post |
|---|---|
jmm |
The Java Memory Model Explained: volatile, happens-before, and Why Your Double-Checked Lock Failed |
locks |
synchronized vs ReentrantLock vs StampedLock: Benchmarks and a Decision Table |
atomics |
Java Atomics and VarHandle: CAS, LongAdder, and When Atomics Beat Locks |
vt-pinning |
Diagnosing Virtual Thread Pinning in Production: JFR Events, jcmd, and Real Fixes |
synchronizers |
CountDownLatch vs CyclicBarrier vs Phaser vs Semaphore in Java |
executors |
ExecutorService Done Right: Shutdown, try-with-resources and Virtual Thread Executors |
License
MIT - see LICENSE.