Lessons
Java · Expert
Java · Expert. Ten lessons. Open-book quizzes. Lesson 1 free.
10 lessons · The Host · Lesson 1 free
Pass all ten lessons for the certificate. Sample · Claim
Lesson 1 · On the house
Memory model sketch
Happens-before.
Lesson 2
JNI sketch
Native calls carefully.
Lesson 3
Security Manager legacy / hardening
Trust boundaries.
Lesson 4
GC awareness
Allocations and pause goals.
Lesson 5
Annotation processors sketch
Compile-time codegen.
Lesson 6
API evolution
Binary compatibility.
Lesson 7
Virtual threads sketch
Lightweight concurrency.
Lesson 8
Formal-ish testing
Property tests and mutation ideas.
Lesson 9
Performance API design
Avoid chatty interfaces.
Lesson 10
Expert capstone
Small library surface.
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Certificate
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