Polymorphism │ ┌─────────────┴─────────────┐ ▼ ▼ Compile-Time / Static Runtime / Dynamic (Method Overloading) (Method Overriding)

: Makes the method accessible from anywhere outside the class.

: Tracking operational lifecycles through defined states: New, Runnable, Blocked, Waiting, and Terminated.

: A class where every variable is declared as private . Inheritance (IS-A Relationship)

| Module | Topics Covered | Distinguishing Feature | | :--- | :--- | :--- | | | Tokens, Data Types, Literals, Arrays, Var-arg methods, main() method explanation. | Deep dive into static blocks and main method overloading/inheritance. | | OOP | Coupling, Cohesion, extends , implements , IS-A vs HAS-A, Polymorphism (Overloading vs Overriding), final keyword. | Strict rules for method overriding (covariant returns, exceptions). | | Exception Handling | Try-catch-finally, throw vs throws , Custom exceptions, Error vs Exception. | Flow diagrams for exception propagation. | | Multithreading | Thread states, synchronized keyword, Inter-thread communication ( wait() , notify() ), Deadlock, Lock framework (basic). | Explanation of Race Condition with visual memory models. | | I/O Streams | File , FileInputStream , Serialization/Deserialization, transient keyword. | Serialization quirks (static variables, parent class constructors). | | Collections | List , Set , Map (HashMap vs Hashtable), Queue , Sorting ( Comparable vs Comparator ), Utility classes ( Collections , Arrays ). | Detailed internal implementation of HashMap (Load factor, Threshold). | | Java 8 Features | Lambda expressions, Stream API, Default methods, Method references. | Practical mapping of functional interfaces. |

Complete structural rules for Encapsulation, Inheritance, Polymorphism, and Abstraction.

Highly scalable, thread-safe map that locks data at a segment level instead of locking the entire table. 8. Java Virtual Machine (JVM) Internals

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The curriculum is designed to transform a beginner into a developer with professional-level logic. The notes are generally categorized into the following major modules: 1. Language Fundamentals

According to the notes, Arrays are fixed in size, hold homogeneous elements, and lack readymade method support. Collections are growable, hold both homogeneous/heterogeneous elements, and come with built-in methods for data manipulation.

Durga Sir's Core Java notes are widely considered a "goldmine" for both beginners and experienced developers. The materials are meticulously organized to cover the full spectrum of Java fundamentals, object-oriented principles, and advanced runtime concepts. 1. Language Fundamentals

: Java features 60+ strict keywords that cannot be repurposed as identifiers.