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

JAVA8/StreamsInJAVA/src/OptionalExample.java

@@ -0,0 +1,19 @@
+import java.util.Optional; // Import the Optional class
+
+public class OptionalExample {
+    public static void main(String[] args) {
+        // 1. Create an Optional containing the string "hello"
+        Optional<String> optional = Optional.of("hello");
+
+        // 2. Transform the value inside the Optional to uppercase ("HELLO")
+        String result = optional
+                .map(String::toUpperCase)
+                // 3. Filter the value - check if it starts with "H". "HELLO" starts with "H", so the Optional remains present.
+                .filter(s -> s.startsWith("H"))
+                // 4. If the Optional was empty, return "world". It's not empty, so return the value inside ("HELLO").
+                .orElse("world");
+
+        // 5. Print the final result
+        System.out.println(result);
+    }
+}