ArchitectThe first three topics of every volume are live. New topics are added in rounds across all volumes, so the whole path grows evenly.
Java Language Fundamentals & Object-Oriented Programming
1.1 Java PlatformJava language, Java platform, JDK, JRE, JVM, Java SE, Jakarta EE and the Java ecosystem1.2 Java Source-to-Execution LifecycleFrom a .java file to instructions on the CPU — compilation, bytecode, class loading, interpretation, JIT and the program lifecycle1.3 Java Language CharacteristicsWhat "object-oriented, strongly and statically typed, managed, multithreaded, secure and portable" actually means — and where each claim stopsGenerics, Collections & Type System
1.1 Generic TypesGeneric classes, generic interfaces and generic methods1.2 Type ParametersType parameter declaration, multiple type parameters and naming conventions1.3 Generic BenefitsType safety, reusability and compile-time checkingFunctional Java, Streams & Modern Java
1.1 Functional Programming ConceptsFunctions as values, higher-order behaviour and side effects1.2 Lambda SyntaxParameters, expression bodies and statement bodies1.3 Variable CaptureEffectively final variables and capturing stateExceptions, I/O, Serialization, Reflection & Metadata
1.1 Exception ModelThrowable hierarchy, Error vs Exception, checked and unchecked exceptions1.2 Exception Syntaxtry, catch, finally, multi-catch and try-with-resources1.3 Exception Propagation & DesignPropagation, custom exceptions, chaining, best practices and anti-patternsJava Platform Evolution & Advanced Language Features
1.1 JPMS FundamentalsModule declaration, exports, requires, opens, uses/provides1.2 Module RuntimeModule path, class path vs module path, readability and encapsulation2.1 Record FundamentalsDeclaration, components, accessors, canonical and compact constructors
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