Index: /applications/viewer/jmapviewer/src/org/openstreetmap/gui/jmapviewer/tilesources/BingAerialTileSource.java
===================================================================
--- /applications/viewer/jmapviewer/src/org/openstreetmap/gui/jmapviewer/tilesources/BingAerialTileSource.java	(revision 35455)
+++ /applications/viewer/jmapviewer/src/org/openstreetmap/gui/jmapviewer/tilesources/BingAerialTileSource.java	(revision 35456)
@@ -17,4 +17,5 @@
 import java.util.logging.Logger;
 import java.util.regex.Pattern;
+import java.util.stream.Collectors;
 
 import javax.xml.parsers.DocumentBuilder;
@@ -290,15 +291,10 @@
             if (data == null)
                 return "Error loading Bing attribution data";
-            StringBuilder a = new StringBuilder();
-            for (Attribution attr : data) {
-                if (zoom <= attr.maxZoom && zoom >= attr.minZoom) {
-                    if (topLeft.getLon() < attr.max.getLon() && botRight.getLon() > attr.min.getLon()
-                            && topLeft.getLat() > attr.min.getLat() && botRight.getLat() < attr.max.getLat()) {
-                        a.append(attr.attributionText);
-                        a.append(' ');
-                    }
-                }
-            }
-            return a.toString();
+            return data.stream()
+                    .filter(attr -> zoom <= attr.maxZoom && zoom >= attr.minZoom)
+                    .filter(attr -> topLeft.getLon() < attr.max.getLon() && botRight.getLon() > attr.min.getLon())
+                    .filter(attr -> topLeft.getLat() > attr.min.getLat() && botRight.getLat() < attr.max.getLat())
+                    .map(attr -> attr.attributionText)
+                    .collect(Collectors.joining(" "));
         } catch (RuntimeException e) {
             e.printStackTrace();
Index: /applications/viewer/jmapviewer/src/org/openstreetmap/gui/jmapviewer/tilesources/TemplatedTMSTileSource.java
===================================================================
--- /applications/viewer/jmapviewer/src/org/openstreetmap/gui/jmapviewer/tilesources/TemplatedTMSTileSource.java	(revision 35455)
+++ /applications/viewer/jmapviewer/src/org/openstreetmap/gui/jmapviewer/tilesources/TemplatedTMSTileSource.java	(revision 35456)
@@ -3,4 +3,5 @@
 
 import java.io.IOException;
+import java.util.Arrays;
 import java.util.HashMap;
 import java.util.Map;
@@ -187,11 +188,5 @@
         Matcher m = Pattern.compile("\\{[^}]*\\}").matcher(url);
         while (m.find()) {
-            boolean isSupportedPattern = false;
-            for (Pattern pattern : ALL_PATTERNS) {
-                if (pattern.matcher(m.group()).matches()) {
-                    isSupportedPattern = true;
-                    break;
-                }
-            }
+            boolean isSupportedPattern = Arrays.stream(ALL_PATTERNS).anyMatch(pattern -> pattern.matcher(m.group()).matches());
             if (!isSupportedPattern) {
                 throw new IllegalArgumentException(