Changeset 11297 in josm

Timestamp:

2016-11-23T23:39:36+01:00 (7 years ago)

Author:

simon04

Message:

see #13960 - Enhance exception message

File:

• trunk/src/org/openstreetmap/josm/gui/layer/LayerManager.java (modified) (1 diff)

trunk/src/org/openstreetmap/josm/gui/layer/LayerManager.java

@@ -192 +192 @@
     protected synchronized void realAddLayer(Layer layer) {
         if (containsLayer(layer)) {
-            throw new IllegalArgumentException("Cannot add a layer twice.");
+            throw new IllegalArgumentException("Cannot add a layer twice: " + layer);
         }
         LayerPositionStrategy positionStrategy = layer.getDefaultLayerPosition();