Migrate development environment from Windows to macOS and continue project updates

- Shifted primary development environment from Windows to macOS to ensure better performance, stability, and streamlined workflow for Java development.
- Removed OS-specific metadata and ensured platform-agnostic project compatibility.
- Normalized line endings to LF for cross-platform consistency.
- Verified and adjusted file paths, permissions, and encoding settings to suit macOS environment.
- Cleaned up unnecessary Windows-generated files and updated Git configuration accordingly.
- Future commits and development will now be
managed entirely from macOS.

This migration ensures a cleaner, more consistent
setup moving forward and prepares the project for
scalable development across Unix-based systems.

Future development will continue on macOS for a
smoother, Unix-based experience.

Signed-off-by: Someshdiwan <[email protected]>

Author: Someshdiwan

site/content.md

@@ -1027,6 +1027,67 @@ It emphasizes robust error handling practices that enhance application stability
 
 ### [🧵 Section 19 MultiThreading On GitHub](https://github.com/Someshdiwan/JavaEvolution-Learning-Growing-Mastering/tree/master/Section19MultiThreading/)
 
+This comprehensive section delves into the **multithreading and concurrency** features of Java—from the basics of thread 
+creation to advanced topics like deadlocks, thread safety, and modern thread pooling.
+
+
+#### 🧠 Combined Summary:
+
+- **Thread Basics**:
+    - Files like `MethodsInThread.java`, `ThreadNewMethods.java`, `ThreadsMethods.java`, and `YeildMethodInThread.java` 
+      cover creating threads using `Thread` and `Runnable`, along with lifecycle methods like `start()`, `run()`, `join()`, `yield()`, etc.
+
+- **Synchronization & Thread Communication**:
+    - `Synchronization.java`, `WhiteboardTeacherStudent.java`, and the entire `Synchronization/` folder handle 
+       **synchronized blocks**, object locks, and the classic **producer-consumer** patterns.
+    - Key issues like **unfair locking**, **synchronization drawbacks**, and **race conditions** are addressed in 
+      `.txt` resources.
+
+- **Deadlock & Thread Safety**:
+    - `DeadLock/` folder demonstrates deadlock-prone scenarios and ways to avoid them.
+    - Multiple `.txt` files explain **thread safety strategies** and **real-world scenarios**.
+
+- **Locks Framework**:
+    - Found under `Locks/`, this explores `ReentrantLock`, `ReadWriteLock`, and the **difference between fair and 
+      unfair locks**.
+    - `Distributed Locking` and `ReentrantLock allows the same thread to acquire the lock multiple times!.txt` 
+       hint at deeper practical usage.
+
+- **Thread Pooling (Executors)**:
+    - Covered in the `ThreadPooling/` folder, explaining `ExecutorService`, `Callable`, `Future`, `CompletableFuture`, 
+      and coordination tools like `CountDownLatch` and `CyclicBarrier`.
+
+- **Volatile & Atomic**:
+    - Under `Volatile and Atomic/`, Java's memory consistency using the `volatile` keyword (`VolatileExample.java`, 
+      `VolatileCounter.java`) and atomic operations using `AtomicInteger` (`AtomicExample.java`) are demonstrated.
+
+- **Real-World Simulations**:
+    - `ATMMoney.java`, `PrintHelloSimulteneously.java`, and `WhiteboardTeacherStudent.java` simulate 
+       multithreaded environments, illustrating key concepts like synchronization, wait/notify, and shared resources.
+
+- **Interview Prep**:
+    - `Interview Basic Questions.txt`: A curated list of important multithreading questions to ace Java developer interviews.
+
+---
+
+```
+
+🧠 Related Topic Overview:
+
+|  Concept                         | Explanation                                                                 |
+|----------------------------------|-----------------------------------------------------------------------------|
+|  Thread, Runnable                | Base classes/interfaces for creating threads                                |
+|  synchronized, wait/notify       | Object-level locks and inter-thread signaling                               |
+|  volatile                        | Ensures visibility of shared variables across threads                       |
+|  AtomicInteger                   | Lock-free, thread-safe operations on single variables                       |
+|  ExecutorService                 | Manages thread pools with better control (shutdown, task submission)        |
+|  CompletableFuture               | Async programming with callbacks and chaining (non-blocking)                |
+|  ReentrantLock,ReadWriteLock     | Advanced locking with finer-grained control over access                     |
+|  Deadlock                        | Circular waiting → prevent with proper lock ordering or timeouts            |
+|  CountDownLatch, CyclicBarrier   | Tools to coordinate threads reaching common state                           |
+
+```
+
 ---
 
 ## Part 1: Deadlocks in Java
@@ -1572,6 +1633,37 @@ You dive into **generic classes, interfaces, and wildcards** — foundational fo
 
 ### [Section24 Java Generics Type Safe Data Structures On GitHub](https://github.com/Someshdiwan/JavaEvolution-Learning-Growing-Mastering/tree/master/Section24JavaGenerics)
 
+#### 🧠 Combined Summary:
+
+- **Generic Classes**:
+    - `GenericClass/Pair.java`, `Box.java`, `BoxIMP.java`: Define generic classes like `Pair<K,V>` or `Box<T>` to hold objects of any type safely.
+    - `Main.java`: Showcases how to create and use these classes with actual types.
+
+- **Generic Interfaces**:
+    - `GenericInterfaces.java`, `StringContainer1.java`, `Employee1.java`: Demonstrate how to define and implement interfaces that work with generic types.
+    - Useful for APIs that handle collections, services, or containers.
+
+- **Generic Methods & Utilities**:
+    - `GenericFunctionsExample.java`, `GenericDemo.java`, `GenericClassDemo.java`: Use generics in methods for flexible and reusable logic.
+    - Great for sorting, swapping, or processing elements in collections.
+
+- **Bounded Types (Upper & Lower Bounds)**:
+    - `Upper and Lower Bounds in Java Generics.txt`: Learn how to **restrict generics** using `extends` and `super` to work with specific type hierarchies.
+    - Wildcards (`<?>`, `<? extends T>`, `<? super T>`) add power and flexibility when dealing with generic data.
+
+- **Wildcard Use-Cases**:
+    - `Java Generics Wildcards, Generic Methods, and Super Bounds.txt`: Deep dive into when and why to use wildcards, especially for reading/writing from lists.
+
+- **Foundational Notes**:
+    - `WhyGenerics.java`, `Generics in Java.txt`: Explain the motivation behind generics—type safety, DRY code, compile-time checks, and avoiding casting.
+
+---
+
+📘 **Pro Tips**:
+- Use `<? extends T>` when you only want to **read** from a structure.
+- Use `<? super T>` when you only want to **write** into a structure.
+- Prefer generics to raw types to prevent **ClassCastException** at runtime.
+
 ### <sup><sub>[▲ TOP](#table-of-contents)</sub></sup>
 
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