Index: applications/editors/josm/plugins/cadastre-fr/src/cadastre_fr/CadastreInterface.java
===================================================================
--- applications/editors/josm/plugins/cadastre-fr/src/cadastre_fr/CadastreInterface.java	(revision 31992)
+++ applications/editors/josm/plugins/cadastre-fr/src/cadastre_fr/CadastreInterface.java	(revision 31993)
@@ -66,11 +66,4 @@
 
     final  int cRetriesGetCookie = 10; // 10 times every 3 seconds means 30 seconds trying to get a cookie
-
-    /**
-     * Constructs a new {@code CadastreInterface}.
-     */
-    public CadastreInterface() {
-        // Constructor is needed to avoid https://jira.sonarsource.com/browse/SONARJAVA-1459
-    }
 
     public boolean retrieveInterface(WMSLayer wmsLayer) throws DuplicateLayerException, WMSException {
@@ -424,7 +417,5 @@
         JComboBox<String> inputCommuneList = new JComboBox<>(communeList);
         p.add(inputCommuneList, GBC.eol().fill(GBC.HORIZONTAL).insets(10, 0, 0, 0));
-        JOptionPane pane = new JOptionPane(p, JOptionPane.INFORMATION_MESSAGE, JOptionPane.OK_CANCEL_OPTION, null) {
-            private static final long serialVersionUID = 1L;
-        };
+        JOptionPane pane = new JOptionPane(p, JOptionPane.INFORMATION_MESSAGE, JOptionPane.OK_CANCEL_OPTION, null);
         //pane.createDialog(Main.parent, tr("Select commune")).setVisible(true);
         // this below is a temporary workaround to fix the "always on top" issue