Use lambdas where possible

Using the batch cleanup operation via Source -> Cleanup -> "Use lambdas
where possible" from standard JDT.

Change-Id: I5452bd94fdccc920ade071228aeed3a8b9fdbe62
Signed-off-by: Lars Vogel <Lars.Vogel@vogella.com>

org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/PackFile.java

@@ -71,13 +71,12 @@ import org.slf4j.LoggerFactory;
  */
 public class PackFile implements Iterable<PackIndex.MutableEntry> {
 	private final static Logger LOG = LoggerFactory.getLogger(PackFile.class);
-	/** Sorts PackFiles to be most recently created to least recently created. */
-	public static final Comparator<PackFile> SORT = new Comparator<PackFile>() {
-		@Override
-		public int compare(PackFile a, PackFile b) {
-			return b.packLastModified.compareTo(a.packLastModified);
-		}
-	};
+
+	/**
+	 * Sorts PackFiles to be most recently created to least recently created.
+	 */
+	public static final Comparator<PackFile> SORT = (a, b) -> b.packLastModified
+			.compareTo(a.packLastModified);
 
 	private final File packFile;
 

org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/pack/PackWriter.java

@@ -142,23 +142,24 @@ public class PackWriter implements AutoCloseable {
 	private static final Map<WeakReference<PackWriter>, Boolean> instances =
 			new ConcurrentHashMap<>();
 
-	private static final Iterable<PackWriter> instancesIterable = new Iterable<PackWriter>() {
-		@Override
-		public Iterator<PackWriter> iterator() {
-			return new Iterator<PackWriter>() {
-				private final Iterator<WeakReference<PackWriter>> it =
-						instances.keySet().iterator();
+	private static final Iterable<PackWriter> instancesIterable = () -> new Iterator<PackWriter>() {
+
+		private final Iterator<WeakReference<PackWriter>> it = instances
+				.keySet().iterator();
+
 		private PackWriter next;
 
 		@Override
 		public boolean hasNext() {
-					if (next != null)
+			if (next != null) {
 				return true;
+			}
 			while (it.hasNext()) {
 				WeakReference<PackWriter> ref = it.next();
 				next = ref.get();
-						if (next != null)
+				if (next != null) {
 					return true;
+				}
 				it.remove();
 			}
 			return false;
@@ -179,8 +180,6 @@ public class PackWriter implements AutoCloseable {
 			throw new UnsupportedOperationException();
 		}
 	};
-		}
-	};
 
 	/**
 	 * Get all allocated, non-released PackWriters instances.