changed the file structure

Code/Steiner/oppUebung4/.vscode/settings.json

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+{
+    "java.project.sourcePaths": ["src"],
+    "java.project.outputPath": "bin",
+    "java.project.referencedLibraries": [
+        "lib/**/*.jar"
+    ]
+}

Code/Steiner/oppUebung4/README.md

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+## Getting Started
+
+Welcome to the VS Code Java world. Here is a guideline to help you get started to write Java code in Visual Studio Code.
+
+## Folder Structure
+
+The workspace contains two folders by default, where:
+
+- `src`: the folder to maintain sources
+- `lib`: the folder to maintain dependencies
+
+Meanwhile, the compiled output files will be generated in the `bin` folder by default.
+
+> If you want to customize the folder structure, open `.vscode/settings.json` and update the related settings there.
+
+## Dependency Management
+
+The `JAVA PROJECTS` view allows you to manage your dependencies. More details can be found [here](https://github.com/microsoft/vscode-java-dependency#manage-dependencies).

Code/Steiner/oppUebung4/src/App.java

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+public class App {
+    public static void main(String[] args) throws Exception {
+        Object[][] article = {
+                { 1, "Banana", 5, "Stk" },
+                { 23, "Flour", 2, "KG" },
+                { 12, "Milk", 4, "Liters" },
+                { 34, "Apple", 10, "Stk" },
+                { 45, "Sugar", 1, "KG" },
+                { 67, "Eggs", 12, "Stk" },
+                { 89, "Rice", 5, "KG" },
+                { 21, "Butter", 2, "Packs" },
+                { 78, "Orange Juice", 3, "Liters" },
+                { 56, "Bread", 2, "Loaves" },
+                { 90, "Cheese", 1, "KG" },
+                { 32, "Tomato", 8, "Stk" },
+                { 11, "Salt", 1, "KG" }
+
+        };
+
+        // Create an array to hold Storage objects
+        Storage[] myStorage = new Storage[article.length];
+
+        // Create and store Storage objects in the array
+        for (int i = 0; i < article.length; i++) {
+            myStorage[i] = createStorage(article[i]);
+        }
+
+        // Print out the details of each Item
+        for (Storage storage : myStorage) {
+            printItems(storage);
+        }
+
+    }
+
+    private static Storage createStorage(Object[] article) {
+        Storage storage = new Storage();
+        storage.storageId = (int) article[0];
+        storage.name = (String) article[1];
+        storage.unit.quantaty = (int) article[2];
+        storage.unit.unit = (String) article[3];
+        return storage;
+    }
+
+    private static void printItems(Storage storage) {
+        System.out.println("Item on shelf: " + storage.storageId);
+        System.out.println("Item name: " + storage.name);
+        System.out.println("Item(s) on stock: " + storage.unit.quantaty);
+        System.out.println("Measured unit: " + storage.unit.unit);
+        System.out.println("-----------------------------------------");
+    }
+}

Code/Steiner/oppUebung4/src/Storage.java

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+public class Storage {
+    int storageId;
+    String name;
+    Unit unit = new Unit();
+}

Code/Steiner/oppUebung4/src/Unit.java

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+public class Unit {
+    int quantaty;
+    String unit;
+}