feat: Add KeyBoard class for summing two user-input numbers

WHAT the code does:
- Defines a `KeyBoard` class with a `main()` method.
- Uses `Scanner` to take two integers (`x` and `y`) from user input.
- Computes their sum `z = x + y`.
- Prints the result in the format: `"Sum is <z>"`.

WHY this matters:
- Demonstrates **reading input from the keyboard** using `Scanner`.
- Reinforces arithmetic operation and formatted output.
- Provides a simple interactive program for practicing user input handling.

HOW it works:
1. Prompts user → `"Enter a two numbers"`.
2. Reads two integers from the console.
3. Adds them and stores in `z`.
4. Prints → `"Sum is <value>"`.

Tips & gotchas:
- `Scanner` should be closed after use (`sc.close()`).
- Input must be valid integers; otherwise, `InputMismatchException` will occur.
- Prompt message `"Enter a two numbers"` could be improved grammatically (e.g., `"Enter two numbers:"`).
- Works for integers only — for floating-point inputs, use `nextDouble()`.

Use-cases:
- Educational example for **basic I/O in Java**.
- Useful for learning how to accept and process user inputs.
- Foundation for building small calculators or interactive CLI programs.
- Prepares for more advanced input-handling tasks.

Short key: class-keyboard-user input-sum.

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

Author: Someshdiwan

Section10Methods/PracticeProblems/src/KeyBoard.java

@@ -1,17 +1,15 @@
 import java.util.Scanner;
 
 public class KeyBoard {
-    public static void main(String args[])
-    {
+    public static void main(String args[]) {
         Scanner sc = new Scanner(System.in);
-
         int x,y;
         System.out.print("Enter a two numbers");
+
         x = sc.nextInt();
         y = sc.nextInt();
 
         int z = x+y;
         System.out.print("Sum is "+z);
-
     }
 }