Coder Baba

🔥 Complete Java Roadmap A-Z 🧑‍💻☕️ ⿡ Variables & Data Types ↳ int, double, char, boolean, String ↳ float, long, short, byte ⿢ Operators ↳ Arithmetic, Logical, Relational, Bitwise, Assignment, Unary, Ternary ⿣ Control Statements ↳ if, else, else if, switch, case, default ↳ break, continue, return ⿤ Loops ↳ for, while, do-while ↳ for-each loop (array/list iteration) ⿥ Classes & Objects ↳ Class declaration ↳ Objects & object creation using new ↳ Constructors (default + parameterized) ⿦ Methods ↳ Method declaration & overloading ↳ return types, parameters ↳ static vs instance methods ⿧ Access Modifiers ↳ public, private, protected, default (package-private) ⿨ OOP Concepts ↳ Inheritance ↳ Polymorphism (compile/run time) ↳ Abstraction (abstract class + interface) ↳ Encapsulation (getters/setters) ⿩ Arrays & Collections ↳ Single & Multi-dimensional arrays ↳ ArrayList, LinkedList, HashSet, HashMap ↳ Iterators & for-each loops 🔟 Exception Handling ↳ try, catch, finally, throw, throws ↳ Checked vs Unchecked Exceptions ↳ Custom exceptions ⿡⿡ Strings & StringBuilder ↳ String immutability ↳ String methods ↳ Mutable alternatives: StringBuilder, StringBuffer ⿡⿢ Java 8+ Features ↳ Lambda expressions ↳ Streams API ↳ Functional interfaces ↳ Optional ↳ Method references ⿡⿣ File Handling (I/O) ↳ File, FileReader, FileWriter, BufferedReader, BufferedWriter ↳ Scanner ↳ Serialization & Deserialization ⿡⿤ Multithreading ↳ Thread class & Runnable interface ↳ Thread lifecycle ↳ Synchronization ↳ Executors framework ⿡⿥ Inner Classes ↳ Static, non-static, anonymous ↳ Local inner classes ⿡⿦ Enums ↳ Enum declaration and usage ↳ Enum methods and switch cases ⿡⿧ Generics ↳ Generic classes & methods ↳ Bounded types ↳ Wildcards ⿡⿨ JVM, JRE, JDK ↳ Java compilation/execution flow ↳ Memory structure: Heap, Stack ↳ Garbage collection basics ⿡⿩ Annotations ↳ Built-in: @Override, @Deprecated, @SuppressWarnings ↳ Custom annotations ⿢⿠ Reflections API ↳ Inspecting classes, methods, fields at runtime ⿢⿡ Networking ↳ Sockets, ServerSocket, URL & HTTP connections ⿢⿢ Design Patterns ↳ Singleton, Factory, Strategy, Observer, Builder ⿢⿣ Maven/Gradle ↳ Build automation ↳ Dependency management ↳ pom.xml, build.gradle basics ⿢⿤ JUnit & Testing ↳ Unit testing with JUnit ↳ Assertions ↳ Test cases & suites ⿢⿥ Spring Framework (Bonus) ↳ Spring Boot basics ↳ Dependency Injection, REST APIs ↳ Annotations & configurations React ♥️ for more #HappyCoding #coderbaba follow @coder_baba