Index: trunk/src/org/openstreetmap/josm/data/coor/conversion/DMSCoordinateFormat.java
===================================================================
--- trunk/src/org/openstreetmap/josm/data/coor/conversion/DMSCoordinateFormat.java	(revision 12738)
+++ trunk/src/org/openstreetmap/josm/data/coor/conversion/DMSCoordinateFormat.java	(revision 12739)
@@ -21,5 +21,5 @@
     private static final String DMS00 = DMS_SECOND_FORMATTER.format(0.0);
 
-    public static DMSCoordinateFormat INSTANCE = new DMSCoordinateFormat();
+    public static final DMSCoordinateFormat INSTANCE = new DMSCoordinateFormat();
 
     protected DMSCoordinateFormat() {
Index: trunk/src/org/openstreetmap/josm/data/coor/conversion/DecimalDegreesCoordinateFormat.java
===================================================================
--- trunk/src/org/openstreetmap/josm/data/coor/conversion/DecimalDegreesCoordinateFormat.java	(revision 12738)
+++ trunk/src/org/openstreetmap/josm/data/coor/conversion/DecimalDegreesCoordinateFormat.java	(revision 12739)
@@ -12,5 +12,5 @@
 public class DecimalDegreesCoordinateFormat extends AbstractCoordinateFormat {
 
-    public static DecimalDegreesCoordinateFormat INSTANCE = new DecimalDegreesCoordinateFormat();
+    public static final DecimalDegreesCoordinateFormat INSTANCE = new DecimalDegreesCoordinateFormat();
 
     protected DecimalDegreesCoordinateFormat() {
Index: trunk/src/org/openstreetmap/josm/data/coor/conversion/NauticalCoordinateFormat.java
===================================================================
--- trunk/src/org/openstreetmap/josm/data/coor/conversion/NauticalCoordinateFormat.java	(revision 12738)
+++ trunk/src/org/openstreetmap/josm/data/coor/conversion/NauticalCoordinateFormat.java	(revision 12739)
@@ -19,5 +19,5 @@
     private static final String DM00 = DM_MINUTE_FORMATTER.format(0.0);
 
-    public static NauticalCoordinateFormat INSTANCE = new NauticalCoordinateFormat();
+    public static final NauticalCoordinateFormat INSTANCE = new NauticalCoordinateFormat();
 
     protected NauticalCoordinateFormat() {
Index: trunk/src/org/openstreetmap/josm/data/coor/conversion/ProjectedCoordinateFormat.java
===================================================================
--- trunk/src/org/openstreetmap/josm/data/coor/conversion/ProjectedCoordinateFormat.java	(revision 12738)
+++ trunk/src/org/openstreetmap/josm/data/coor/conversion/ProjectedCoordinateFormat.java	(revision 12739)
@@ -14,5 +14,5 @@
 public class ProjectedCoordinateFormat extends AbstractCoordinateFormat {
 
-    public static ProjectedCoordinateFormat INSTANCE = new ProjectedCoordinateFormat();
+    public static final ProjectedCoordinateFormat INSTANCE = new ProjectedCoordinateFormat();
 
     protected ProjectedCoordinateFormat() {