feat: Convert string to char array and modify first character

🔍 What this code does:
- Takes the string `"hello"` and converts it to a character array using `toCharArray()`.
- Modifies the first character (`'h'`) to `'j'`.
- Reconstructs a new string from the modified array.
- Prints the result: `"jello"`.

✅ Why:
This approach demonstrates how to modify specific characters in a string since strings in Java are immutable.

Signed-off-by: Somesh diwan <[email protected]>

Author: Someshdiwan

Section6StringClassPrinting/src/StringCC.java

@@ -1,11 +1,10 @@
-class StringCC
-{
-    public static void main(String[] args)
-    {
+class StringCC {
+    public static void main(String[] args) {
         String x = "hello";
         char[] xArray = x.toCharArray();
+
         xArray[0] = 'j';
         x = new String(xArray);
         System.out.println(x);
     }
-}
+}