Learn Java Language Object Model, API Design & Metaprogramming

Kaufman-style skill map untuk menguasai Java language substrate, object model, type system, API design, reflection, dan code generation tanpa mengulang materi Java basic yang sudah selesai.

Java sebagai sistem kontrak berlapis: source, compiler, class file, linkage, runtime behavior, module boundary, framework introspection, dan consumer expectation.

Deep structure dari package java.lang sebagai fondasi bahasa, runtime object model, type metadata, text model, wrapper model, errors, platform hooks, dan implikasinya terhadap desain API enterprise.

Deep dive ke java.lang.Object, identity, equality, hashCode, toString, clone, finalization, dan kontrak universal yang membentuk semua reference type Java.

Model runtime Class, ClassLoader, Module, Package, module layer, resource lookup, dan type identity Java untuk desain framework, library, dan boundary yang aman.

Package system, unnamed package, implicit java.lang import, ordinary/static/module imports, name resolution, binary/canonical names, dan desain package architecture Java.

Accessibility, encapsulation, module exports/opens, nested access, protected/package-private semantics, dan desain API boundary yang defensible.

API surface minimization, signature budget, public contract cost, compatibility risk, dependency leak, overload control, dan strategi desain API Java yang stabil.

Package architecture as an enforceable design boundary: package responsibility, coupling, cycles, visibility, JPMS exports, fitness functions, and failure modeling.

How to evolve Java public APIs safely across source, binary, behavioral, reflective, module, serialization, and generic compatibility boundaries.

OOP as type and behavior modeling in Java: object identity, role, invariant, polymorphism, dispatch, lifecycle ownership, and API-level modeling beyond pattern memorization.

Deep Java guide to inheritance, composition, substitutability, LSP, fragile base classes, delegation, skeletal implementations, sealed hierarchies, and safe extension design.

Deep Java guide to interfaces, abstract classes, role modeling, default methods, private interface methods, skeletal implementations, sealed interfaces, capability design, and API boundary trade-offs.

Deep Java guide to sealed classes, records, enums, domain shape control, sum/product modeling, state-space reduction, illegal state prevention, pattern matching, and API evolution trade-offs.

Deep Java guide to behavioral composition without framework magic: delegation, policies, strategies, pipelines, capability injection, composition boundaries, and misuse-resistant design.

Deep Java guide to functional interfaces, lambda object model, target typing, captures, method references, invokedynamic mental model, and behavior-as-value API design.

Deep Java guide to composition pipelines and higher-order API design using functional interfaces, domain-specific behavior contracts, stage semantics, and misuse-resistant fluent APIs.

Deep Java guide to side effects, purity, deterministic composition, pure-core/impure-shell boundary design, and API contracts that make effects explicit.