diff --git a/.gitea/workflows/javadoc.yml b/.gitea/workflows/javadoc.yml
index 928b391..ce04dcc 100644
--- a/.gitea/workflows/javadoc.yml
+++ b/.gitea/workflows/javadoc.yml
@@ -15,9 +15,7 @@ jobs:
       - name: "Checkout"
         uses: "https://git.euph.dev/actions/checkout@v3"
       - name: "javadoc"
-        run: |
-          mvn package
-          mvn javadoc:javadoc -f pom.xml
+        run: mvn package javadoc:javadoc -f pom.xml
       - name: "Deploy Javadoc"
         env:
           SSH_AUTH_SOCK: /tmp/ssh_agent.sock
diff --git a/.gitea/workflows/quality.yml b/.gitea/workflows/quality.yml
index 0904003..1f899ab 100644
--- a/.gitea/workflows/quality.yml
+++ b/.gitea/workflows/quality.yml
@@ -5,13 +5,23 @@ on:
   - pull_request
 
 jobs:
-  qs:
-    name: "Qualty Check"
+  linting:
+    name: "Linting Check"
     runs-on: "ubuntu-latest"
     container:
       image: "git.euph.dev/actions/runner-java-21:latest"
     steps:
       - name: "Checkout"
         uses: "https://git.euph.dev/actions/checkout@v3"
-      - name: "CHECK"
-        run: mvn checkstyle:check -e
\ No newline at end of file
+      - name: "Checkstyle Linting"
+        run: mvn checkstyle:check -e
+  javadoc:
+    name: "Javadoc Check"
+    runs-on: "ubuntu-latest"
+    container:
+      image: "git.euph.dev/actions/runner-java-21:latest"
+    steps:
+      - name: "Checkout"
+        uses: "https://git.euph.dev/actions/checkout@v3"
+      - name: "Generate Javadoc"
+        run: mvn package javadoc:javadoc -f pom.xml
\ No newline at end of file
diff --git a/.mvn/wrapper/maven-wrapper.jar b/.mvn/wrapper/maven-wrapper.jar
deleted file mode 100644
index c1dd12f..0000000
Binary files a/.mvn/wrapper/maven-wrapper.jar and /dev/null differ
diff --git a/.mvn/wrapper/maven-wrapper.properties b/.mvn/wrapper/maven-wrapper.properties
deleted file mode 100644
index 40ca015..0000000
--- a/.mvn/wrapper/maven-wrapper.properties
+++ /dev/null
@@ -1,2 +0,0 @@
-distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.8.5/apache-maven-3.8.5-bin.zip
-wrapperUrl=https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar
\ No newline at end of file
diff --git a/pom.xml b/pom.xml
index 8a13de1..e1374e6 100644
--- a/pom.xml
+++ b/pom.xml
@@ -21,12 +21,12 @@
         <dependency>
             <groupId>org.openjfx</groupId>
             <artifactId>javafx-controls</artifactId>
-            <version>20.0.1</version>
+            <version>21.0.2</version>
         </dependency>
         <dependency>
             <groupId>org.openjfx</groupId>
             <artifactId>javafx-fxml</artifactId>
-            <version>20.0.1</version>
+            <version>21.0.2</version>
         </dependency>
         <dependency>
             <groupId>org.controlsfx</groupId>
@@ -112,11 +112,20 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-javadoc-plugin</artifactId>
-                <version>3.6.0</version>
+                <version>3.6.3</version>
                 <configuration>
+                    <source>21</source>
+                    <release>21</release>
+                    <author>true</author>
+                    <doclint>all,-missing</doclint>
                     <reportOutputDirectory>${project.basedir}</reportOutputDirectory>
                     <sourcepath>src/main/java</sourcepath>
                     <destDir>javadoc_build</destDir>
+                    <tags>
+                        <tag>
+                            <name>implSpec</name>
+                        </tag>
+                    </tags>
                 </configuration>
             </plugin>
         </plugins>
diff --git a/src/main/java/de/hitec/nhplus/datastorage/ConnectionBuilder.java b/src/main/java/de/hitec/nhplus/datastorage/ConnectionBuilder.java
index 3b1bcf2..3945a3c 100644
--- a/src/main/java/de/hitec/nhplus/datastorage/ConnectionBuilder.java
+++ b/src/main/java/de/hitec/nhplus/datastorage/ConnectionBuilder.java
@@ -10,6 +10,7 @@ import java.sql.SQLException;
  * The {@link DaoFactory} allows a safe connection to the Database.
  *
  * @author Bernd Heidemann
+ * @author Dominik Säume
  * @version 1.0
  */
 public class ConnectionBuilder {
@@ -20,7 +21,7 @@ public class ConnectionBuilder {
     private static Connection connection;
 
     /**
-     * @return a Thread-safe {@link Connection} to the Database.
+     * @return A Thread-safe {@link Connection} to the Database.
      */
     synchronized public static Connection getConnection() {
         try {
diff --git a/src/main/java/de/hitec/nhplus/datastorage/Dao.java b/src/main/java/de/hitec/nhplus/datastorage/Dao.java
index 477faf5..8f70e87 100644
--- a/src/main/java/de/hitec/nhplus/datastorage/Dao.java
+++ b/src/main/java/de/hitec/nhplus/datastorage/Dao.java
@@ -5,44 +5,46 @@ import java.util.List;
 
 /**
  * {@link Dao} is the Abbreviation of Data-Access-Object.
- * This Interface has the Basic Methods which are needed on any DAO to work as expected.
+ * This Interface has the Basic Methods which are needed on any {@link Dao} to work as expected.
  *
- * @param <T> The Model for which that DAO is implemented
+ * @param <T> The Model for which that {@link Dao} is implemented.
  * @author Bernd Heidemann
+ * @author Dominik Säume
  * @version 1.0
- * @implSpec The Implementations should be added to the {@link DaoFactory}
+ * @implSpec The Implementations should be added to the {@link DaoFactory}.
  */
 public interface Dao<T> {
+
     /**
      * Create a Database Entry from a Model object.
      *
-     * @param t the Model instance
+     * @param t The Model instance.
      */
     void create(T t) throws SQLException;
 
     /**
      * Read a Database Entry to a Model object.
      *
-     * @param id of the Element in the Database
+     * @param id The ID of the Element in the Database.
      */
     T read(int id) throws SQLException;
 
     /**
-     * Read all Database Entries to a {@link List} of Model objects.
+     * @return All Database Entries as a {@link List} of Model instances
      */
     List<T> readAll() throws SQLException;
 
     /**
      * Update the Database according to the Values of the Model object.
      *
-     * @param t the Model instance.
+     * @param t The Model instance.
      */
     void update(T t) throws SQLException;
 
     /**
      * Delete a Database Entry.
      *
-     * @param id of the Element in the Database.
+     * @param id The ID of the Element in the Database.
      */
     void delete(int id) throws SQLException;
 }
diff --git a/src/main/java/de/hitec/nhplus/datastorage/DaoFactory.java b/src/main/java/de/hitec/nhplus/datastorage/DaoFactory.java
index 5fcebc7..1bdbab9 100644
--- a/src/main/java/de/hitec/nhplus/datastorage/DaoFactory.java
+++ b/src/main/java/de/hitec/nhplus/datastorage/DaoFactory.java
@@ -6,9 +6,10 @@ import de.hitec.nhplus.patient.database.PatientDao;
 import de.hitec.nhplus.treatment.database.TreatmentDao;
 
 /**
- * The {@link DaoFactory} is a Singleton({@link DaoFactory#getInstance}) which should be used to get {@link Dao}s.
+ * The {@link DaoFactory} is a Singleton({@link #getInstance}) which should be used to get {@link Dao}s.
  *
  * @author Bernd Heidemann
+ * @author Dominik Säume
  * @version 1.0
  */
 public class DaoFactory {
@@ -22,7 +23,7 @@ public class DaoFactory {
     }
 
     /**
-     * @return {@link DaoFactory}, the Singleton Instance
+     * @return The Singleton Instance.
      */
     public static DaoFactory getInstance() {
         if (DaoFactory.instance == null) {
@@ -32,28 +33,32 @@ public class DaoFactory {
     }
 
     /**
-     * @return a {@link TreatmentDao}
+     * @return A new {@link TreatmentDao} Instance with a Database Connection.
+     * @see de.hitec.nhplus.treatment.Treatment Treatment
      */
     public TreatmentDao createTreatmentDao() {
         return new TreatmentDao(ConnectionBuilder.getConnection());
     }
 
     /**
-     * @return a {@link PatientDao}
+     * @return A new {@link PatientDao} Instance with a Database Connection.
+     * @see de.hitec.nhplus.patient.Patient Patient
      */
     public PatientDao createPatientDAO() {
         return new PatientDao(ConnectionBuilder.getConnection());
     }
 
     /**
-     * @return a {@link NurseDao}
+     * @return A new {@link NurseDao} Instance with a Database Connection.
+     * @see de.hitec.nhplus.nurse.Nurse Nurse
      */
     public NurseDao createNurseDAO() {
         return new NurseDao(ConnectionBuilder.getConnection());
     }
 
     /**
-     * @return a {@link MedicationDao}
+     * @return A new {@link MedicationDao} Instance with a Database Connection.
+     * @see de.hitec.nhplus.medication.Medication Medication
      */
     public MedicationDao createMedicationDAO() {
         return new MedicationDao(ConnectionBuilder.getConnection());
diff --git a/src/main/java/de/hitec/nhplus/datastorage/DaoImp.java b/src/main/java/de/hitec/nhplus/datastorage/DaoImp.java
index a9c7ff6..0d3af03 100644
--- a/src/main/java/de/hitec/nhplus/datastorage/DaoImp.java
+++ b/src/main/java/de/hitec/nhplus/datastorage/DaoImp.java
@@ -10,16 +10,18 @@ import java.util.List;
  * The {@link DaoImp} is a Generic Base Implementation of the {@link Dao},
  * which should fit most use cases.
  *
- * @param <T> The Model for which that DAO is implemented
+ * @param <T> The Model for which that {@link Dao} is implemented.
  * @author Bernd Heidemann
+ * @author Dominik Säume
  * @version 1.0
- * @implSpec The Implementations should be added to the {@link DaoFactory}
+ * @implSpec The Implementations should be added to the {@link DaoFactory}.
  */
 public abstract class DaoImp<T> implements Dao<T> {
     protected final Connection connection;
 
     /**
-     * @param connection a Database Connection, which should be gotten from {@link ConnectionBuilder}
+     * @param connection The Database Connection to use
+     * @implSpec The Connection should be Received from the {@link ConnectionBuilder}.
      */
     public DaoImp(Connection connection) {
         this.connection = connection;
@@ -28,7 +30,7 @@ public abstract class DaoImp<T> implements Dao<T> {
     /**
      * Creates a new Database Entry from a Model object.
      *
-     * @param t the Model instance
+     * @param t The Model instance.
      */
     @Override
     public void create(T t) throws SQLException {
@@ -38,7 +40,7 @@ public abstract class DaoImp<T> implements Dao<T> {
     /**
      * Read a Database Entry to a Model object.
      *
-     * @param id of the Element in the Database
+     * @param id The ID of the Element in the Database.
      */
     @Override
     public T read(int id) throws SQLException {
@@ -61,7 +63,7 @@ public abstract class DaoImp<T> implements Dao<T> {
     /**
      * Update the Database according to the Values of the Model object.
      *
-     * @param t the Model instance.
+     * @param t The Model instance.
      */
     @Override
     public void update(T t) throws SQLException {
@@ -71,7 +73,7 @@ public abstract class DaoImp<T> implements Dao<T> {
     /**
      * Delete a Database Entry.
      *
-     * @param id of the Element in the Database.
+     * @param id The ID of the Element in the Database.
      */
     @Override
     public void delete(int id) throws SQLException {
diff --git a/src/main/java/de/hitec/nhplus/fixtures/Fixture.java b/src/main/java/de/hitec/nhplus/fixtures/Fixture.java
index 69d300e..4a2e03d 100644
--- a/src/main/java/de/hitec/nhplus/fixtures/Fixture.java
+++ b/src/main/java/de/hitec/nhplus/fixtures/Fixture.java
@@ -1,12 +1,44 @@
 package de.hitec.nhplus.fixtures;
 
+import de.hitec.nhplus.datastorage.ConnectionBuilder;
+
 import java.sql.Connection;
 import java.sql.SQLException;
 import java.util.Map;
 
-public interface Fixture<T>
-{
+/**
+ * A Fixture is a Class, which can be used to set up a specific set of Data.
+ *
+ * @param <T> The Model for which the {@link Fixture} is implemented.
+ * @author Dominik Säume
+ * @version 1.0
+ * @implSpec The Implementations should be added to the {@link Fixtures#main}.
+ */
+public interface Fixture<T> {
+
+    /**
+     * Drop all Dependent Tables.
+     *
+     * @param connection A Database {@link Connection}, which should be received from
+     *                   the {@link ConnectionBuilder#getConnection}
+     * @implSpec Use {@code IF EXISTS}, to ensure that it doesn't throw an {@link Exception}.
+     */
     void dropTable(Connection connection) throws SQLException;
+
+    /**
+     * Set up the Empty Tables with the Schema.
+     *
+     * @param connection A Database {@link Connection}, which should be received from
+     *                   the {@link ConnectionBuilder#getConnection}
+     */
     void setupTable(Connection connection) throws SQLException;
+
+    /**
+     * Loads all Model specific Data to the Database.
+     *
+     * @return A Map of Models with a {@link String} key, to be used by other {@link Fixture}
+     * @implSpec The {@link de.hitec.nhplus.datastorage.Dao Dao} should be received
+     * from {@link de.hitec.nhplus.datastorage.DaoFactory DaoFactory}.
+     */
     Map<String, T> load() throws SQLException;
 }
diff --git a/src/main/java/de/hitec/nhplus/fixtures/Fixtures.java b/src/main/java/de/hitec/nhplus/fixtures/Fixtures.java
index 9497632..d179ad5 100644
--- a/src/main/java/de/hitec/nhplus/fixtures/Fixtures.java
+++ b/src/main/java/de/hitec/nhplus/fixtures/Fixtures.java
@@ -6,14 +6,23 @@ import de.hitec.nhplus.patient.Patient;
 import java.sql.Connection;
 import java.util.Map;
 
-public class Fixtures
-{
-    public static void main(String[] args)
-    {
+/**
+ * A Class, Implementing an Entrypoint({@link #main}), for loading a Specific set of Data.
+ *
+ * @author Dominik Säume
+ * @version 1.0
+ */
+public class Fixtures {
+
+    /**
+     * An Entrypoint, for loading a Specific set of Data.
+     *
+     * @param args unused.
+     */
+    public static void main(String[] args) {
         Connection connection = ConnectionBuilder.getConnection();
 
-        try
-        {
+        try {
             PatientFixture patientFixture = new PatientFixture();
             patientFixture.dropTable(connection);
             patientFixture.setupTable(connection);
@@ -34,7 +43,7 @@ public class Fixtures
             medicationFixture.setupTable(connection);
             medicationFixture.load();
 
-        } catch (Exception exception){
+        } catch (Exception exception) {
             System.out.println(exception.getMessage());
         }