config-persister-directory-xml: use lambdas

This series of patches uses lambdas instead of anonymous classes for
functional interfaces when possible. Lambdas are replaced with method
references when appropriate.

Change-Id: I007db062e0b4cabcf56ddbe31039a548e6426017
Signed-off-by: Stephen Kitt <skitt@redhat.com>

diff --git a/opendaylight/config/config-persister-directory-xml-adapter/src/main/java/org/opendaylight/controller/config/persist/storage/directory/xml/XmlDirectoryPersister.java b/opendaylight/config/config-persister-directory-xml-adapter/src/main/java/org/opendaylight/controller/config/persist/storage/directory/xml/XmlDirectoryPersister.java
index 383eb8202d070d17057a01ae16ccb5a00fe469dc..10fb270ccc0a94084af68e2c78a92a1620b475ae 100644 (file)
--- a/opendaylight/config/config-persister-directory-xml-adapter/src/main/java/org/opendaylight/controller/config/persist/storage/directory/xml/XmlDirectoryPersister.java
+++ b/opendaylight/config/config-persister-directory-xml-adapter/src/main/java/org/opendaylight/controller/config/persist/storage/directory/xml/XmlDirectoryPersister.java
@@ -142,12 +142,9 @@ public class XmlDirectoryPersister implements Persister {
     private static FilenameFilter getFilter(final Set<String>fileExtensions) {
         checkArgument(fileExtensions.isEmpty() == false, "No file extension provided", fileExtensions);
 
-        return new FilenameFilter() {
-            @Override
-            public boolean accept(final File dir, final String name) {
-                String ext = Files.getFileExtension(name);
-                return fileExtensions.contains(ext);
-            }
+        return (dir, name) -> {
+            String ext = Files.getFileExtension(name);
+            return fileExtensions.contains(ext);
         };
     }