Index: applications/editors/josm/plugins/lakewalker/src/org/openstreetmap/josm/plugins/lakewalker/StringEnumConfigurer.java
===================================================================
--- applications/editors/josm/plugins/lakewalker/src/org/openstreetmap/josm/plugins/lakewalker/StringEnumConfigurer.java	(revision 30197)
+++ applications/editors/josm/plugins/lakewalker/src/org/openstreetmap/josm/plugins/lakewalker/StringEnumConfigurer.java	(revision 30532)
@@ -44,5 +44,5 @@
     protected String[] validValues;
     protected String[] transValues;
-    protected JComboBox box;
+    protected JComboBox<String> box;
     protected Box panel;
     protected String tooltipText = "";
@@ -68,5 +68,5 @@
             panel = Box.createHorizontalBox();
             panel.add(new JLabel(name));
-            box = new JComboBox(transValues);
+            box = new JComboBox<>(transValues);
             box.setToolTipText(tooltipText);
             box.setMaximumSize(new Dimension(box.getMaximumSize().width,box.getPreferredSize().height));