feat: Add Literal1 class demonstrating long literal with suffix

WHAT the code does:
- Defines a `Literal1` class with a `main()` method.
- Declares a `long` variable `L` with value `999999999999L`.
- Prints the value to the console.

WHY this matters:
- Demonstrates how to define **long literals** in Java.
- By default, numeric literals are treated as `int`.
  → The suffix `L` (or `l`) tells the compiler to treat it as a `long`.
- Important when dealing with values larger than the `int` range (±2,147,483,647).

HOW it works:
1. `999999999999` exceeds `int` range.
2. Adding `L` ensures the literal is compiled as a `long`.
3. Program prints `999999999999`.

Tips & gotchas:
- Always use uppercase `L` instead of lowercase `l` to avoid confusion with `1`.
- If the literal fits within `int` range, suffix `L` is optional.
- For very large numbers, consider `BigInteger`.

Use-cases:
- Handling large numbers in financial or scientific calculations.
- Educational demo for **numeric literal suffixes** in Java.
- Ensures clarity when working with values beyond `int`.

Short key: class-literal1-long-literal.

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

Author: Someshdiwan

Section10Methods/PracticeProblems/src/Literal1.java

@@ -1,6 +1,5 @@
 public class Literal1 {
-    public static void main(String args[])
-    {
+    public static void main(String args[]) {
         long L = 999999999999L;
         System.out.println(L);
     }