AHHHHHHHHHH COMMITED TO GITHUB INSTEAD OF FORGEJO FOR WEEKS

Code/Steiner/interfacesTheorie/.vscode/settings.json

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

Code/Steiner/interfacesTheorie/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/interfacesTheorie/src/App.java

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+public class App {
+    public static void main(String[] args) throws Exception {
+        Kuckuck fips = new Kuckuck();
+        fips.singen();
+        fips.bewegen();
+        fips.essen();
+    }
+}

Code/Steiner/interfacesTheorie/src/ITierBewegen.java

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+public interface ITierBewegen {
+    public void bewegen();
+}

Code/Steiner/interfacesTheorie/src/ITierNahrungsaufnahme.java

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+public interface ITierNahrungsaufnahme {
+    public void essen();
+
+}

Code/Steiner/interfacesTheorie/src/Kuckuck.java

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+public class Kuckuck extends Vogel {
+
+    @Override
+    public void singen() {
+        System.out.println("Kuckuck geräusche");
+    }
+
+    @Override
+    public void essen() {
+        System.out.println("Der Kuckuck fliegt");
+    }
+
+    @Override
+    public void bewegen() {
+        System.out.println("Der Kuckuck frisst mücken - MAHLZEIT");
+    }
+}

Code/Steiner/interfacesTheorie/src/Vogel.java

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+public abstract class Vogel implements ITierNahrungsaufnahme, ITierBewegen {
+    Vogel() {
+
+    }
+
+    public abstract void singen();
+}