From 90dfab344b91f11e965bf0dff98bf2d6f62296bc Mon Sep 17 00:00:00 2001
From: SteffenLm <33038091+SteffenLm@users.noreply.github.com>
Date: Fri, 6 Jun 2025 22:45:32 +0200
Subject: [PATCH 1/2] Solution Optionals 03

---
 Crate.java    | 10 +++++++---
 Exercise.java | 11 ++++++++---
 2 files changed, 15 insertions(+), 6 deletions(-)

diff --git a/Crate.java b/Crate.java
index 7c87ae1..5770779 100644
--- a/Crate.java
+++ b/Crate.java
@@ -1,3 +1,5 @@
+import java.util.Optional;
+
 public class Crate<T> {
 
   private T box1;
@@ -22,18 +24,20 @@ public void insertBottle(T bottle, int box) throws CrateIndexOutOfBoundsExceptio
     }
   }
 
-  public T takeBottle(int box) throws CrateIndexOutOfBoundsException {
+  public Optional<T> takeBottle(int box) throws CrateIndexOutOfBoundsException {
     if (box < 1 || box > 6) {
       throw new CrateIndexOutOfBoundsException();
     }
 
-    return switch (box) {
+    T foundBox = switch (box) {
       case 1 -> box1;
       case 2 -> box2;
       case 3 -> box3;
       case 4 -> box4;
       case 5 -> box5;
-      default -> box6;
+      case 6 -> box6;
+      default -> null;
     };
+    return Optional.ofNullable(foundBox);
   }
 }
diff --git a/Exercise.java b/Exercise.java
index e4b94c5..a273781 100644
--- a/Exercise.java
+++ b/Exercise.java
@@ -11,9 +11,14 @@ public static void main(String[] args) {
       crate.insertBottle(new WineBottle(), 5);
       crate.insertBottle(new WineBottle(), 6);
 
-      if (crate.takeBottle(3) instanceof BeerBottle beerBottle) {
-        beerBottle.chugALug();
-      }
+      crate.takeBottle(3)
+          .ifPresentOrElse(
+              bottle -> {
+                if (bottle instanceof BeerBottle beerBottle) {
+                  beerBottle.chugALug();
+                }
+              },
+              () -> System.out.println("Gesuchte Flasche ist nicht vorhanden."));
     } catch (CrateIndexOutOfBoundsException e) {
       System.err.println(e.getMessage());
     }

From c8a546ed43bb7f8e70faa5ffc0f9d8d08151235c Mon Sep 17 00:00:00 2001
From: github-actions <>
Date: Fri, 6 Jun 2025 20:46:02 +0000
Subject: [PATCH 2/2] Google Java Format

---
 Crate.java    | 19 ++++++++++---------
 Exercise.java |  3 ++-
 2 files changed, 12 insertions(+), 10 deletions(-)

diff --git a/Crate.java b/Crate.java
index 5770779..a213d5c 100644
--- a/Crate.java
+++ b/Crate.java
@@ -29,15 +29,16 @@ public Optional<T> takeBottle(int box) throws CrateIndexOutOfBoundsException {
       throw new CrateIndexOutOfBoundsException();
     }
 
-    T foundBox = switch (box) {
-      case 1 -> box1;
-      case 2 -> box2;
-      case 3 -> box3;
-      case 4 -> box4;
-      case 5 -> box5;
-      case 6 -> box6;
-      default -> null;
-    };
+    T foundBox =
+        switch (box) {
+          case 1 -> box1;
+          case 2 -> box2;
+          case 3 -> box3;
+          case 4 -> box4;
+          case 5 -> box5;
+          case 6 -> box6;
+          default -> null;
+        };
     return Optional.ofNullable(foundBox);
   }
 }
diff --git a/Exercise.java b/Exercise.java
index a273781..643552d 100644
--- a/Exercise.java
+++ b/Exercise.java
@@ -11,7 +11,8 @@ public static void main(String[] args) {
       crate.insertBottle(new WineBottle(), 5);
       crate.insertBottle(new WineBottle(), 6);
 
-      crate.takeBottle(3)
+      crate
+          .takeBottle(3)
           .ifPresentOrElse(
               bottle -> {
                 if (bottle instanceof BeerBottle beerBottle) {