Index: applications/editors/josm/plugins/gpsblam/src/org/openstreetmap/josm/plugins/gpsblam/GPSBlamInputData.java
===================================================================
--- applications/editors/josm/plugins/gpsblam/src/org/openstreetmap/josm/plugins/gpsblam/GPSBlamInputData.java	(revision 30701)
+++ applications/editors/josm/plugins/gpsblam/src/org/openstreetmap/josm/plugins/gpsblam/GPSBlamInputData.java	(revision 30737)
@@ -32,5 +32,5 @@
 
 public class GPSBlamInputData extends LinkedList<CachedLatLon> {
-	private Collection<Calendar> datesSeen = new HashSet<Calendar>();
+	private Collection<Calendar> datesSeen = new HashSet<>();
 
 	public int getNDays() { return datesSeen.size(); }
Index: applications/editors/josm/plugins/gpsblam/src/org/openstreetmap/josm/plugins/gpsblam/GPSBlamLayer.java
===================================================================
--- applications/editors/josm/plugins/gpsblam/src/org/openstreetmap/josm/plugins/gpsblam/GPSBlamLayer.java	(revision 30701)
+++ applications/editors/josm/plugins/gpsblam/src/org/openstreetmap/josm/plugins/gpsblam/GPSBlamLayer.java	(revision 30737)
@@ -25,5 +25,5 @@
     public GPSBlamLayer(String name) {
 		super(name);
-		blamMarkers = new LinkedList<GPSBlamMarker>();
+		blamMarkers = new LinkedList<>();
 	}