Learning Notes¶
Structured notes following the Java Roadmap 2025 - covering Phase 1 (Java Fundamentals) and Phase 2 (Advanced Java & Concurrency).
Phase 1: Java Fundamentals¶
Duration: 1-2 Months
Build a rock-solid foundation in Java programming, focusing on core concepts and object-oriented principles.
| Topic | Description | Status |
|---|---|---|
| Topic 1: Java Basic Interactive Applications | Variables, data types, operators, control flow, loops, methods, user input | |
| Topic 2: OOP & Class Design | Classes, inheritance, polymorphism, abstraction, composition | |
| Topic 3: Arrays, Lists & Autoboxing | Arrays, ArrayList, LinkedList, Iterators, Autoboxing, Enums | |
| Topic 4: Abstraction, Interfaces, Generics & Nested Classes | Abstract classes, interfaces, generics, wildcards, nested classes | |
| Topic 5: Lambda Expressions & Functional Programming | Lambda syntax, functional interfaces, method references, chaining, Comparator convenience | |
| Topic 6: Collections Framework | List, Set, Map, Queue implementations, internals | |
| Topic 7: Java Streams API | Stream pipelines, intermediate & terminal operations, Collectors, Optional, parallel streams |
Phase 2: Advanced Java & Concurrency¶
Duration: 2-3 Months
Master advanced Java concepts including multithreading, concurrency primitives, and JVM internals.
| Topic | Description | Status |
|---|---|---|
| Multithreading & Concurrency | Threads, synchronization, locks, ExecutorService | |
| JVM Internals & Memory | JVM architecture, class loading, memory management | |
| Garbage Collection | GC algorithms, tuning, profiling | |
| Performance Optimization | Profiling, bottlenecks, optimization techniques | |
| Advanced Java Features | Modules, Records, Sealed Classes, Virtual Threads |
Study Approach
- Follow the phases in order. Each topic builds upon previous concepts. Phase 1 establishes the foundation, Phase 2 dives into internals and advanced concepts.