Index: trunk/src/org/openstreetmap/josm/gui/mappaint/styleelement/placement/CompletelyInsideAreaStrategy.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/mappaint/styleelement/placement/CompletelyInsideAreaStrategy.java	(revision 11809)
+++ trunk/src/org/openstreetmap/josm/gui/mappaint/styleelement/placement/CompletelyInsideAreaStrategy.java	(revision 11810)
@@ -86,5 +86,5 @@
     }
 
-    private MapViewPositionAndRotation centerOf(MapViewState mapViewState, Rectangle centeredNBounds) {
+    private static MapViewPositionAndRotation centerOf(MapViewState mapViewState, Rectangle centeredNBounds) {
         return new MapViewPositionAndRotation(
                 mapViewState.getForView(centeredNBounds.getCenterX(), centeredNBounds.getCenterY()), 0);
Index: trunk/src/org/openstreetmap/josm/gui/preferences/imagery/CommonSettingsPanel.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/preferences/imagery/CommonSettingsPanel.java	(revision 11809)
+++ trunk/src/org/openstreetmap/josm/gui/preferences/imagery/CommonSettingsPanel.java	(revision 11810)
@@ -114,5 +114,5 @@
     }
 
-    private void removeCacheFiles(String path) {
+    private static void removeCacheFiles(String path) {
         File directory = new File(path);
         File[] cacheFiles = directory.listFiles((FilenameFilter) (dir, name) -> name.endsWith(".data") || name.endsWith(".key"));
Index: trunk/src/org/openstreetmap/josm/gui/preferences/imagery/ImageryPreference.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/preferences/imagery/ImageryPreference.java	(revision 11809)
+++ trunk/src/org/openstreetmap/josm/gui/preferences/imagery/ImageryPreference.java	(revision 11810)
@@ -866,5 +866,5 @@
             }
 
-            private OffsetBookmark getRow(int row) {
+            private static OffsetBookmark getRow(int row) {
                 return OffsetBookmark.getBookmarkByIndex(row);
             }