praktikum1/aufgabe3

client/src/main/java/org/example/demo/praktikum1/aufgabe3/Client.java

@@ -0,0 +1,53 @@
+package org.example.demo.praktikum1.aufgabe3;
+import javax.naming.InitialContext;
+import javax.naming.Context;
+import java.util.Properties;
+import java.util.Scanner;
+
+public class Client {
+    public static void main(String[] args) throws Exception {
+        Properties props = new Properties();
+        props.setProperty(Context.INITIAL_CONTEXT_FACTORY,
+                          "org.wildfly.naming.client.WildFlyInitialContextFactory");
+        props.setProperty(Context.PROVIDER_URL, "http-remoting://localhost:8080");
+
+        InitialContext ctx = new InitialContext(props);
+        String jndiName = "ejb:/ejb-server-1.0-SNAPSHOT/GuessingGame!org.example.demo.praktikum1.aufgabe3.GuessingGameRemote";
+        var game = (GuessingGameRemote) ctx.lookup(jndiName);
+        var scanner = new Scanner(System.in);
+        var another = true;
+        while (another) {
+            playRound(game, scanner);
+
+            // todo: input exception handling
+            System.out.print("Do you want to play another? ");
+            another = scanner.nextBoolean();
+        }
+        scanner.close();
+    }
+
+    private static void playRound(GuessingGameRemote game, Scanner scanner) {
+        game.init();
+
+        GuessResult result;
+        do {
+            // todo: input exception handling
+            System.out.print("Guess a number from 1-100: ");
+            var guess = scanner.nextInt();
+            result = game.testGuess(guess);
+
+            switch (result) {
+            case Success:
+                System.out.println("Correct! The number was "+ guess);
+                break;
+            case TooBig:
+                System.out.println("Your guess was too big!");
+                break;
+            case TooSmall:
+                System.out.println("Your guess was too small!");
+                break;
+            }
+        }
+        while (result != GuessResult.Success);
+    }
+}

server/src/main/java/org/example/demo/praktikum1/aufgabe3/GuessResult.java

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+package org.example.demo.praktikum1.aufgabe3;
+
+public enum GuessResult {
+    TooSmall,
+    TooBig,
+    Success,
+}

server/src/main/java/org/example/demo/praktikum1/aufgabe3/GuessingGame.java

@@ -0,0 +1,25 @@
+package org.example.demo.praktikum1.aufgabe3;
+
+import java.util.Random;
+
+import jakarta.ejb.Stateful;
+
+@Stateful
+public class GuessingGame implements GuessingGameRemote {
+    private int num;
+
+    public void init() {
+        var rng = new Random();
+        num = 1 + rng.nextInt(0, 100);
+    }
+
+    public GuessResult testGuess(int guess) {
+        if (guess < num) {
+            return GuessResult.TooSmall;
+        }
+        if (guess > num) {
+            return GuessResult.TooBig;
+        }
+        return GuessResult.Success;
+    }
+}

server/src/main/java/org/example/demo/praktikum1/aufgabe3/GuessingGameRemote.java

@@ -0,0 +1,11 @@
+package org.example.demo.praktikum1.aufgabe3;
+import jakarta.ejb.Remote;
+
+@Remote
+public interface GuessingGameRemote {
+    // start ein spiel, generiere ein zufallszahl.
+    void init();
+
+    // test whether the guess is correct.
+    GuessResult testGuess(int guess);
+}