Index: applications/editors/josm/plugins/namemanager/src/org/openstreetmap/josm/plugins/namemanager/dialog/NameManagerDialog.java
===================================================================
--- applications/editors/josm/plugins/namemanager/src/org/openstreetmap/josm/plugins/namemanager/dialog/NameManagerDialog.java	(revision 30197)
+++ applications/editors/josm/plugins/namemanager/src/org/openstreetmap/josm/plugins/namemanager/dialog/NameManagerDialog.java	(revision 30532)
@@ -77,5 +77,5 @@
     private List<Way> waysInsideSelectedArea;
     private JTabbedPane tabPanel;
-    private JComboBox country;
+    private JComboBox<String> country;
     private JLabel labelLevel1;
     private JTextField level1;
@@ -138,5 +138,5 @@
         buildings.setSelected(false);
         JLabel labelCountry = new JLabel("  " + tr(COUNTRY));
-        country = new JComboBox();
+        country = new JComboBox<>();
         labelLevel1 = new JLabel("  level1");
         level1 = new JTextField();