Added EvenGame class and some minor changes

Author: aseccxz

app/src/main/java/hexlet/code/App.java

@@ -1,8 +1,25 @@
 package hexlet.code;
 
+import java.util.Scanner;
+
 public class App {
     public static void main(String[] args) {
-        System.out.println("Welcome to the Brain Games!");
-        Cli.greeting();
+        System.out.println("""
+                Please enter the game number and press Enter.
+                1 - Greet
+                2 - Even
+                0 - Exit""");
+        int gameChoice;
+        Scanner input = new Scanner(System.in);
+        gameChoice = input.nextInt();
+        System.out.println("Your choice: " + gameChoice);
+        switch (gameChoice) {
+            case 1:
+                Cli.greeting();
+                break;
+            case 2:
+                EvenGame.evenGame();
+                break;
+        }
     }
 }

app/src/main/java/hexlet/code/Cli.java

@@ -3,10 +3,16 @@
 import java.util.Scanner;
 
 public class Cli {
+    public static String name;
+
     public static void greeting() {
-        System.out.print("May I have your name? ");
-        Scanner input = new Scanner(System.in);
-        String name = input.nextLine();
+        System.out.println("Welcome to the Brain Games!");
+        if(name == null){
+            System.out.print("May I have your name? ");
+            Scanner input = new Scanner(System.in);
+            name = input.nextLine();
+        }
         System.out.println("Hello, " + name + "!");
+
     }
 }

app/src/main/java/hexlet/code/EvenGame.java

@@ -0,0 +1,30 @@
+package hexlet.code;
+
+import java.util.Scanner;
+
+public class EvenGame {
+
+    public static void evenGame() {
+        Cli.greeting();
+        System.out.println("Answer 'yes' if the number is even, otherwise answer 'no'.");
+        int gameCount = 0;
+        Scanner input = new Scanner(System.in);
+        while (gameCount < 3) {
+            int guessedNumber = (int) (Math.random() * 100.0);
+            String trueAnswer;
+            trueAnswer = guessedNumber % 2 == 0 ? "yes" : "no";
+            System.out.println("Question: " + guessedNumber);
+            String playerAnswer;
+            playerAnswer = input.nextLine();
+            if (trueAnswer.equals(playerAnswer)) {
+                System.out.println("Correct!");
+                gameCount++;
+            } else {
+                System.out.println("'" + playerAnswer + "' is wrong answer ;(. Correct answer was '" + trueAnswer + "'.");
+                System.out.println("Let's try again, " + Cli.name + "!");
+                gameCount = 0;
+            }
+        }
+        System.out.println("Congratulations, " + Cli.name + "!");
+    }
+}