feat: write string data to file using FileOutputStream (Demo5)

WHAT:
- Implemented a program that demonstrates how to write an entire string
  into a file using `FileOutputStream`.
- File used: Demo5.txt

HOW:
1. Created a `FileOutputStream` pointing to Demo5.txt.
2. Defined a string: "converting string into byte array".
3. Converted the string into a byte array via `getBytes()`.
4. Wrote the byte array to the file using `fout.write(b)`.
5. Closed the stream to free system resources.
6. Printed "success" on successful write.

KEY POINTS:
- `FileOutputStream` works with bytes, so strings must be converted into
  byte arrays (`String.getBytes()`).
- Closing the stream is essential to avoid resource leaks and flush data
  to disk.
- By default, opening a file with `FileOutputStream` overwrites existing
  content.

REAL-WORLD USE CASES:
- Persisting string-based data (logs, user input, configuration).
- Writing data from memory into a plain text file.
- Base building block for advanced file writing (e.g., buffered streams,
  file writers).
- Converting any string to bytes and saving in binary files (beyond just
  text).

NOTES:
- To append instead of overwrite, use:
  `new FileOutputStream(path, true)`.

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

Author: Someshdiwan

Section23JavaIOStreams/DemoCodes/TXT Files/Demo5.txt

@@ -1 +1 @@
-Living the Dreams
+converting string into byte array

Section23JavaIOStreams/DemoCodes/src/Demo5.java

@@ -1,28 +1,28 @@
 import java.io.FileOutputStream;
-public class Demo5
-{
-    public static void main(String args[])
-    {
-        try
-        {
-            FileOutputStream fout=new FileOutputStream("C:\\Users\\somes\\Downloads\\NoteApp\\JavaEvolution-Learning-Growing-Mastering\\Section23JavaIOStreams\\DemoCodes\\TXT Files\\Demo5.txt");
-            String s="Living the Dreams";
-            byte b[]=s.getBytes(); //converting string into byte array
+public class Demo5 {
+    public static void main(String args[]) {
+        try {
+            FileOutputStream fout=new FileOutputStream("/Users/somesh/Java SE/JavaEvolution-Learning-Growing-Mastering/Section23JavaIOStreams/DemoCodes/TXT Files/Demo5.txt");
+
+            String s="converting string into byte array";
+
+            byte b[]=s.getBytes();
+
             fout.write(b);
             fout.close();
+
             System.out.println("success");
         }
-        catch(Exception e)
-        {
+        catch(Exception e) {
             System.out.println(e);
         }
     }
 }
+
 /*
 getBytes --> Encodes this String into a sequence of bytes using the default charset, storing the result into a new byte array.
 
 This program writes the full string "Welcome to JAVA" into a file named myFile.txt using FileOutputStream.
 The string is converted into a byte array using getBytes().
-The entire byte array is written to the file.
-Displays "success" when done.
+The entire byte array is written to the file. Displays "success" when done.
 */