Index: /trunk/src/org/openstreetmap/josm/actions/mapmode/ExtrudeAction.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/actions/mapmode/ExtrudeAction.java	(revision 8838)
+++ /trunk/src/org/openstreetmap/josm/actions/mapmode/ExtrudeAction.java	(revision 8839)
@@ -1110,5 +1110,5 @@
      * Returns true if from1-to1 and from2-to2 vertors directions are opposite
      */
-    private boolean isOppositeDirection(EastNorth from1, EastNorth to1, EastNorth from2, EastNorth to2) {
+    private static boolean isOppositeDirection(EastNorth from1, EastNorth to1, EastNorth from2, EastNorth to2) {
         return (from1.getX()-to1.getX())*(from2.getX()-to2.getX())
               +(from1.getY()-to1.getY())*(from2.getY()-to2.getY()) < 0;
Index: /trunk/src/org/openstreetmap/josm/data/osm/visitor/paint/StyledMapRenderer.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/data/osm/visitor/paint/StyledMapRenderer.java	(revision 8838)
+++ /trunk/src/org/openstreetmap/josm/data/osm/visitor/paint/StyledMapRenderer.java	(revision 8839)
@@ -1459,5 +1459,5 @@
     }
 
-    private Path2D.Double getPath(Way w) {
+    private static Path2D.Double getPath(Way w) {
         Path2D.Double path = new Path2D.Double();
         boolean initial = true;
Index: /trunk/src/org/openstreetmap/josm/io/GeoJSONWriter.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/io/GeoJSONWriter.java	(revision 8838)
+++ /trunk/src/org/openstreetmap/josm/io/GeoJSONWriter.java	(revision 8839)
@@ -118,5 +118,5 @@
     }
 
-    private JsonArrayBuilder getCoorArray(JsonArrayBuilder builder, EastNorth c) {
+    private static JsonArrayBuilder getCoorArray(JsonArrayBuilder builder, EastNorth c) {
         return builder.add(c.getX()).add(c.getY());
     }