Smaller task & refactoring co2

Code/Steiner/repetition-classes-oop/.vscode/settings.json

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

Code/Steiner/repetition-classes-oop/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/repetition-classes-oop/src/App.java

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+
+// Main application class where we create a Teacher object and display some
+// info.
+public class App {
+    public static void main(String[] args) throws Exception {
+        // Sample data for creating a Teacher object.
+        String firstname = "Karl";
+        String lastname = "Marx";
+        int compensation = 1000000;
+        String[] subjects = { "Economics", "Math", "German" };
+
+        // Creating a Teacher object using the data above.
+        Teacher teacher = new Teacher(firstname, lastname, compensation, subjects);
+
+        // Printing the teacher's full name.
+        System.out.println("Teacher: " + teacher.getFirstname() + " " + teacher.getLastname());
+
+        // Printing the teacher's compensation.
+        System.out.println("Compensation: " + teacher.getCompensation());
+
+        // Printing the subjects the teacher teaches.
+        System.out.print("Subjects: ");
+        // Loop through each subject in the array and print it.
+        for (String subject : teacher.getSubjects()) {
+            System.out.print(subject + " ");
+        }
+    }
+}

Code/Steiner/repetition-classes-oop/src/Teacher.java

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+// The Teacher class represents a teacher with a first name, last name, compensation, and subjects they teach.
+public class Teacher {
+    // Private fields to store the teacher's first name, last name, compensation,
+    // and subjects.
+    private String firstname;
+    private String lastname;
+    private int compensation;
+    private String[] subjects;
+
+    // Constructor for initializing a Teacher object with provided details.
+    public Teacher(String firstname, String lastname, int compensation, String[] subjects) {
+        // Assigning the provided first name to the teacher's firstname field.
+        this.firstname = firstname;
+        // Assigning the provided last name to the teacher's lastname field.
+        this.lastname = lastname;
+        // Assigning the provided compensation to the teacher's compensation field.
+        this.compensation = compensation;
+        // Assigning the provided array of subjects to the teacher's subjects field.
+        this.subjects = subjects;
+    }
+
+    // Getter method for getting the teacher's first name.
+    public String getFirstname() {
+        return firstname;
+    }
+
+    // Setter method for setting a new first name for the teacher.
+    public void setFirstname(String firstname) {
+        this.firstname = firstname;
+    }
+
+    // Getter method for getting the teacher's last name.
+    public String getLastname() {
+        return lastname;
+    }
+
+    // Setter method for setting a new last name for the teacher.
+    public void setLastname(String lastname) {
+        this.lastname = lastname;
+    }
+
+    // Getter method for getting the teacher's compensation.
+    public int getCompensation() {
+        return compensation;
+    }
+
+    // Setter method for setting a new compensation for the teacher.
+    public void setCompensation(int compensation) {
+        this.compensation = compensation;
+    }
+
+    // Getter method for getting the array of subjects the teacher teaches.
+    public String[] getSubjects() {
+        return subjects;
+    }
+
+    // Setter method for setting a new array of subjects for the teacher.
+    public void setSubjects(String[] subjects) {
+        this.subjects = subjects;
+    }
+}