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

Section6StringClassPrinting/Engineering Digest ED/src/SubstringsDemo.java

@@ -0,0 +1,13 @@
+public class SubstringsDemo
+{
+    public static void main(String[] args)
+    {
+        String alphabet = "ABCDEFG";
+        //letter: index. A:0, B:1, C:2, D:3, E:4, F:5, G:6
+        String keyboard = "QWERTY";
+        //letter: index. Q:0, W:1, E:2, R:3, T:4, Y:5
+
+        System.out.println(alphabet.substring(1,7));
+        System.out.println(keyboard.substring(0,5));
+    }
+}

Section6StringClassPrinting/OpenLinks.cmd

@@ -0,0 +1,26 @@
+@echo off
+pushd "%~dp0"
+
+:MENU
+cls
+echo ============================================================
+echo               Java - StringBuilder Documentation
+echo ============================================================
+echo 1. StringBuilder Class (Java SE 8 API)
+echo 2. Exit
+echo.
+set /p choice=Enter your choice [1-2]:
+
+if "%choice%"=="1" start https://docs.oracle.com/javase/8/docs/api/java/lang/StringBuilder.html & goto MENU
+if "%choice%"=="2" goto END
+
+echo.
+echo Invalid choice. Please select 1 or 2.
+pause
+goto MENU
+
+:END
+echo Goodbye!
+pause
+
+popd