Mittwoch lesson

Code/Steiner/Zootest/.vscode/settings.json

@@ -0,0 +1,7 @@
+{
+    "java.project.sourcePaths": ["src"],
+    "java.project.outputPath": "bin",
+    "java.project.referencedLibraries": [
+        "lib/**/*.jar"
+    ]
+}

Code/Steiner/Zootest/README.md

@@ -0,0 +1,18 @@
+## 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/Zootest/src/Animal.java

@@ -0,0 +1,3 @@
+public abstract class Animal {
+    public abstract void makeSound();
+}

Code/Steiner/Zootest/src/Camel.java

@@ -0,0 +1,11 @@
+public class Camel extends Animal implements Climbing {
+    @Override
+    public void makeSound() {
+        System.out.println("Desert Camel grumbles!");
+    }
+
+    @Override
+    public void climb() {
+        System.out.println("Desert Camel climbs a dune.");
+    }
+}

Code/Steiner/Zootest/src/Climbing.java

@@ -0,0 +1,3 @@
+public interface Climbing {
+    void climb();
+}

Code/Steiner/Zootest/src/Eagle.java

@@ -0,0 +1,16 @@
+public class Eagle extends Animal implements Flying, Swimming {
+    @Override
+    public void makeSound() {
+        System.out.println("Eagle screams!");
+    }
+
+    @Override
+    public void fly() {
+        System.out.println("Eagle flies high in the sky.");
+    }
+
+    @Override
+    public void swim() {
+        System.out.println("Eagle fishes in the water (swims...).");
+    }
+}

Code/Steiner/Zootest/src/Flying.java

@@ -0,0 +1,4 @@
+public interface Flying {
+    void fly();
+}
+

Code/Steiner/Zootest/src/Frog.java

@@ -0,0 +1,16 @@
+public class Frog extends Animal implements Swimming, Climbing {
+    @Override
+    public void makeSound() {
+        System.out.println("Green Frog croaks!");
+    }
+
+    @Override
+    public void swim() {
+        System.out.println("Green Frog swims in the pond.");
+    }
+
+    @Override
+    public void climb() {
+        System.out.println("Green Frog climbs a tree.");
+    }
+}

Code/Steiner/Zootest/src/Swimming.java

@@ -0,0 +1,3 @@
+public interface Swimming {
+    void swim();
+}

Code/Steiner/Zootest/src/ZooTest.java

@@ -0,0 +1,17 @@
+public class ZooTest {
+    public static void main(String[] args) {
+        Animal eagle = new Eagle();
+        eagle.makeSound();
+        ((Eagle) eagle).fly();
+        ((Eagle) eagle).swim();
+
+        Animal frog = new Frog();
+        frog.makeSound();
+        ((Frog) frog).swim();
+        ((Frog) frog).climb();
+
+        Animal camel = new Camel();
+        camel.makeSound();
+        ((Camel) camel).climb();
+    }
+}