Added Javadoc since tags as requested by @delvh

src/main/java/envoy/client/ui/Theme.java

@@ -35,6 +35,7 @@ public class Theme implements Serializable {
 	 * @param selectionColor              the section color
 	 * @param typingMessageColor          the color of currently typed messages
 	 * @param userNameColor               the color of user names
+	 * @since Envoy v0.2-alpha
 	 */
 	public Theme(String themeName, Color backgroundColor, Color cellColor, Color interactableForegroundColor, Color interactableBackgroundColor,
 			Color messageColorChat, Color dateColorChat, Color selectionColor, Color typingMessageColor, Color userNameColor) {
@@ -58,6 +59,7 @@ public class Theme implements Serializable {
 	 *
 	 * @param name  the name of the {@link Theme}
 	 * @param other the {@link Theme} to copy
+	 * @since Envoy v0.2-alpha
 	 */
 	public Theme(String name, Theme other) {
 		themeName = name;
@@ -67,6 +69,7 @@ public class Theme implements Serializable {
 	/**
 	 * @return a {@code Map<String, Color>} of all colors defined for this theme
 	 *         with their names as keys
+	 * @since Envoy v0.2-alpha
 	 */
 	public Map<String, Color> getColors() { return colors; }
 

src/main/java/envoy/client/ui/settings/SettingsPanel.java

@@ -5,11 +5,16 @@ import java.awt.event.ActionListener;
 import javax.swing.JPanel;
 
 /**
+ * Serves as an interface between {@link SettingsScreen} and different
+ * {@link JPanel}s with actual settings that are defined as sub classes of this
+ * class.<br>
+ * <br>
  * Project: <strong>envoy-client</strong><br>
  * File: <strong>SettingsPanel.java</strong><br>
  * Created: <strong>20 Dec 2019</strong><br>
  *
  * @author Kai S. K. Engelbart
+ * @since Envoy v0.2-alpha
  */
 public abstract class SettingsPanel extends JPanel {
 
@@ -18,6 +23,7 @@ public abstract class SettingsPanel extends JPanel {
 	/**
 	 * @return an {@link ActionListener} that should be invoked when the OK button
 	 *         is pressed in the {@link SettingsScreen}
+	 * @since Envoy v0.2-alpha
 	 */
 	public abstract ActionListener getOkButtonAction();
 }

src/main/java/envoy/client/ui/settings/SettingsScreen.java

@@ -25,6 +25,7 @@ import envoy.client.util.EnvoyLog;
  * @author Leon Hofmeister
  * @author Maximilian Käfer
  * @author Kai S. K. Engelbart
+ * @since Envoy v0.2-alpha
  */
 public class SettingsScreen extends JDialog {
 
@@ -87,8 +88,7 @@ public class SettingsScreen extends JDialog {
 					logger.log(Level.FINEST, "Selected settings panel: " + option);
 
 					// Remove previous settings panel
-					if (settingsPanel != null)
+					if (settingsPanel != null) contentPanel.remove(settingsPanel);
-						contentPanel.remove(settingsPanel);
 
 					try {
 						settingsPanel = panels.get(option).getDeclaredConstructor().newInstance();
@@ -99,7 +99,7 @@ public class SettingsScreen extends JDialog {
 						repaint();
 					} catch (InstantiationException | IllegalAccessException | IllegalArgumentException | InvocationTargetException
 							| NoSuchMethodException | SecurityException e) {
-						e.printStackTrace();
+						logger.log(Level.SEVERE, "Failed to invoke constructor of SettingsPanel " + option, e);
 					}
 				}
 			});

src/main/java/envoy/client/ui/settings/ThemeCustomizationPanel.java

@@ -17,11 +17,15 @@ import envoy.client.ui.Theme;
 import envoy.client.util.EnvoyLog;
 
 /**
+ * Displays GUI components that allow changing the current {@Theme} and creating
+ * new ones.<br>
+ * <br>
  * Project: <strong>envoy-client</strong><br>
  * File: <strong>ThemeCustomizationPanel.java</strong><br>
  * Created: <strong>20 Dec 2019</strong><br>
  *
  * @author Kai S. K. Engelbart
+ * @since Envoy v0.2-alpha
  */
 public class ThemeCustomizationPanel extends SettingsPanel {
 
@@ -42,6 +46,8 @@ public class ThemeCustomizationPanel extends SettingsPanel {
 	 * Initializes a {@link ThemeCustomizationPanel} that enables the user to change
 	 * the current {@link Theme} and create new themes as part of the
 	 * {@link SettingsScreen}.
+	 * 
+	 * @since Envoy v0.2-alpha
 	 */
 	public ThemeCustomizationPanel() {
 		temporaryTheme = new Theme("temporaryTheme", Settings.getInstance().getThemes().get(Settings.getInstance().getCurrentTheme()));