removed unnessecary variables

Author: PiaFlessner

src/main/java/backend_data/Header.java

@@ -15,7 +15,6 @@ public class Header implements Serializable{
     private Header parentElement;
     private final boolean isRoot;
     private static final String DISPLAYDIVIDER = ".";
-    private transient Logger log = Logger.getLogger(Logger.GLOBAL_LOGGER_NAME);
     private static Header root;
     //Saving for reload components
     private boolean showSubHeader;
@@ -204,10 +203,6 @@ public void insertNewSubheaderInBetween(int index, Header head) {
                 head.parentElement = this;
                 this.refreshSubHeaderNumbers();
             }
-        } catch (UnsupportedOperationException | ClassCastException | NullPointerException
-                | IllegalArgumentException e) {
-            log.warning("Unexpected Error in insertNewSubheaderInBetween");
-
         } catch (IndexOutOfBoundsException e) {
             this.insertNewSubheaderEnd(head);
         }

src/main/java/visual_components/actions/ToolBoxAddHeaderToRootAction.java

@@ -21,7 +21,7 @@ public ToolBoxAddHeaderToRootAction(MainFrame mainFrame, JPanel parentContainer,
     @Override
     public void actionPerformed(ActionEvent e) {
         Header h = new Header("Add Title Here", -1,mainFrame.getRoot(),false);
-        HeaderComponent hc = new HeaderComponent(MainFrame.WINDOW_BACKGROUND_COLOR, h, this.parentContainer);
+        HeaderComponent hc = new HeaderComponent(MainFrame.WINDOW_BACKGROUND_COLOR, h);
         parentContainer.add(hc); 
         parentContainer.revalidate();
         parentContainer.repaint();

src/main/java/visual_components/header/HeaderComponent.java

@@ -86,14 +86,12 @@ public class HeaderComponent extends JPanel implements DragGestureListener {
      * Numbers, Icon, Title and inherited Text.
      * 
      * @param backgroundColor backgroundcolor which should be used.
-     * @param isOpenChildren  Determines, if the Container should be instantiated
-     *                        opened or closed.
      * @param connectedHeader The Backend Header Element which belongs to the
      *                        ComponentHeader.
      * @param parentContainer The ParentContainer, which inherits all
      *                        HeaderComponents.
      */
-    public HeaderComponent(Color backgroundColor, Header connectedHeader, JPanel parentContainer) {
+    public HeaderComponent(Color backgroundColor, Header connectedHeader) {
         this.connectedHeader = connectedHeader;
         this.backgroundColor = backgroundColor;
         this.setLayout(new BorderLayout());
@@ -859,7 +857,7 @@ public static void reloadComponents() {
      */
     private static void addWholeHeaderTree(Header root) {
         for (Header header : root.getSubheaders()) {
-            HeaderComponent hc = new HeaderComponent(MainFrame.WINDOW_BACKGROUND_COLOR, header, parentContainer);
+            HeaderComponent hc = new HeaderComponent(MainFrame.WINDOW_BACKGROUND_COLOR, header);
             parentContainer.add(hc);
             addWholeHeaderTree(header);
         }