feat: Add StringExample class with greeting methods and user input

WHAT the code does:
- Defines a `StringExample` class that demonstrates **string handling** with methods.
- Uses `Scanner` to take user input (a name).
- Calls `myGreet(String)` to return a personalized greeting.
- Optionally has `greet()` that returns a static message ("how are you").
- Prints the personalized greeting to the console.

WHY this matters:
- Demonstrates how to create and return strings from methods.
- Shows **string concatenation** for dynamic message creation.
- Reinforces **method calling** and passing arguments in Java.
- Introduces **user input handling** with `Scanner`.

HOW it works:
1. Program prompts → `"Enter your name:"`.
2. Reads input using `in.next()` and stores it in `naam`.
3. Calls `myGreet(naam)` which returns `"Hello <name>"`.
4. Prints personalized greeting (e.g., `"Hello Rahul"`).
5. `greet()` exists as a simple utility returning `"how are you"` (not used in main, but available).

Tips & gotchas:
- `Scanner` should be closed after use (`in.close()`) to prevent resource leaks.
- `in.next()` reads only a single word; use `in.nextLine()` if full names with spaces are needed.
- String concatenation creates new objects internally → consider `StringBuilder` for heavy usage.
- Method names could follow clearer naming conventions (e.g., `getGreeting()`).

Use-cases:
- Basic user interaction programs.
- Teaching examples for methods and return values.
- Building blocks for chatbots or text-based interfaces.
- Can be extended to add multiple greeting styles (formal, casual, etc.).

Short key: class-string example-greeting-user input.

Signed-off-by: https://github.com/Someshdiwan <[email protected]>

Author: Someshdiwan

Section10Methods/Methods 2.O/src/StringExample.java

@@ -1,24 +1,24 @@
 import java.util.Scanner;
 
 public class StringExample {
-
     public static void main(String[] args) {
-//        String message = greet();
-//        System.out.println(message);
-
         Scanner in  = new Scanner(System.in);
         System.out.print("Enter your name: ");
+
         String naam = in.next();
+
         String personalised = myGreet(naam);
         System.out.println(personalised);
+
+        String message = greet();
+        System.out.println(message);
     }
 
     static String myGreet(String name) {
         String message = "Hello " + name;
         return message;
     }
 
-
     static String greet() {
         String greeting = "how are you";
         return greeting;