diff --git a/src/main/java/edu/kit/typicalc/Application.java b/src/main/java/edu/kit/typicalc/Application.java
index e15db43..b99f1ec 100644
--- a/src/main/java/edu/kit/typicalc/Application.java
+++ b/src/main/java/edu/kit/typicalc/Application.java
@@ -13,15 +13,18 @@ import org.vaadin.artur.helpers.LaunchUtil;
 import java.util.regex.Pattern;
 
 /**
- * The entry point of the Spring Boot application.
- * <p>
- * Use the * and some desktop browsers.
+ * Entry point of the Spring Boot application.
  */
 @SpringBootApplication
 public class Application extends SpringBootServletInitializer
         implements AppShellConfigurator, VaadinServiceInitListener {
     private static final Pattern ROUTE_PATTERN = Pattern.compile("/" + TypeInferenceView.ROUTE + "/[^/]+");
 
+    /**
+     * Main function executed in development mode.
+     *
+     * @param args empty array
+     */
     public static void main(String[] args) {
         LaunchUtil.launchBrowserInDevelopmentMode(SpringApplication.run(Application.class, args));
     }
diff --git a/src/main/java/edu/kit/typicalc/TypicalcConfiguration.java b/src/main/java/edu/kit/typicalc/TypicalcConfiguration.java
index 243a168..60090c4 100644
--- a/src/main/java/edu/kit/typicalc/TypicalcConfiguration.java
+++ b/src/main/java/edu/kit/typicalc/TypicalcConfiguration.java
@@ -8,10 +8,16 @@ import org.springframework.context.annotation.Configuration;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
 
 /**
- * This class configures some server properties related to HTTP.
+ * This class configures server properties related to HTTP.
  */
 @Configuration
 public class TypicalcConfiguration implements WebMvcConfigurer {
+
+    /**
+     * Sets SameSite=Strict on all cookies.
+     *
+     * @return a customizer object that does the cookie modification
+     */
     @Bean
     public TomcatContextCustomizer sameSiteCookiesConfig() {
         return context -> {
diff --git a/src/main/java/edu/kit/typicalc/view/MathjaxAdapter.java b/src/main/java/edu/kit/typicalc/view/MathjaxAdapter.java
index 7e28191..1751054 100644
--- a/src/main/java/edu/kit/typicalc/view/MathjaxAdapter.java
+++ b/src/main/java/edu/kit/typicalc/view/MathjaxAdapter.java
@@ -1,13 +1,21 @@
 package edu.kit.typicalc.view;
 
 /**
- * Represents an HTML element that uses MathJax and custom JavaScript classes to render its contents.
- * Provides an interface between Java code and said JavaScript classes. Allows to reveal parts of the
- * rendered LaTeX step-by-step.
+ * Represents an HTML element that uses MathJax and custom TypeScript modules to render its contents.
+ * Provides an interface between Java code and said TypeScript modules.
+ * Multiple steps can be shown using the getStepCount and showStep methods.
  */
 public interface MathjaxAdapter {
 
+    /**
+     * @return amount of steps available
+     */
     int getStepCount();
 
+    /**
+     * Show a specific step to the user.
+     *
+     * @param n step index
+     */
     void showStep(int n);
 }
diff --git a/src/main/java/edu/kit/typicalc/view/TypicalcI18NProvider.java b/src/main/java/edu/kit/typicalc/view/TypicalcI18NProvider.java
index 6a3cc2f..721656f 100644
--- a/src/main/java/edu/kit/typicalc/view/TypicalcI18NProvider.java
+++ b/src/main/java/edu/kit/typicalc/view/TypicalcI18NProvider.java
@@ -37,21 +37,17 @@ public class TypicalcI18NProvider implements I18NProvider {
     @Override
     public String getTranslation(String key, Locale locale, Object... params) {
         ResourceBundle bundle = ResourceBundle.getBundle(LANGUAGE_BUNDLE_PREFIX, locale);
-        String translation;
-
 
         if (bundle.containsKey(key)) {
-            translation = bundle.getString(key);
+            return bundle.getString(key);
         } else {
             try {
-                translation = this.generalBundle.getString(key);
+                return this.generalBundle.getString(key);
             } catch (MissingResourceException exception) {
-                // this should never be the case
+                // this is only the case for untranslated texts
                 return "?[" + key + "]?";
             }
         }
-
-        return translation;
     }
 
 }