Changed how the LookAndFeel info is generated.

Added demo image.

Signed-off-by: weisj <weisj@arcor.de>

src/main/java/com/github/weisj/darklaf/theme/Theme.java

@@ -44,7 +44,7 @@ import java.util.logging.Logger;
 /**
  * @author Jannis Weis
  */
-public abstract class Theme extends UIManager.LookAndFeelInfo {
+public abstract class Theme {
     private static final Logger LOGGER = Logger.getLogger(Theme.class.getName());
     private static final String[] UI_PROPERTIES = new String[]{
             "borders", "button", "checkBox", "colorChooser", "comboBox", "fileChooser", "tristate",
@@ -57,14 +57,8 @@ public abstract class Theme extends UIManager.LookAndFeelInfo {
             "control", "dialog", "files", "indicator", "menu", "misc", "navigation", "window"
     };
 
-
-    public Theme() {
-        super("overridden by getName()", DarkLaf.class.getCanonicalName());
-    }
-
-    @Override
-    public final String getClassName() {
-        return DarkLaf.class.getCanonicalName();
+    public UIManager.LookAndFeelInfo createLookAndFeelInfo() {
+        return new UIManager.LookAndFeelInfo(getName(), DarkLaf.class.getCanonicalName());
     }
 
     /**