util: Use lambdas where applicable in the FileSortOrderByName/Size classes.

src/main/java/com/owncloud/android/utils/FileSortOrderByName.java

@@ -49,17 +49,15 @@ public class FileSortOrderByName extends FileSortOrder {
     public List<OCFile> sortCloudFiles(List<OCFile> files) {
         final int multiplier = mAscending ? 1 : -1;
 
-        Collections.sort(files, new Comparator<OCFile>() {
-            public int compare(OCFile o1, OCFile o2) {
-                if (o1.isFolder() && o2.isFolder()) {
-                    return multiplier * new AlphanumComparator().compare(o1, o2);
-                } else if (o1.isFolder()) {
-                    return -1;
-                } else if (o2.isFolder()) {
-                    return 1;
-                }
+        Collections.sort(files, (o1, o2) -> {
+            if (o1.isFolder() && o2.isFolder()) {
                 return multiplier * new AlphanumComparator().compare(o1, o2);
+            } else if (o1.isFolder()) {
+                return -1;
+            } else if (o2.isFolder()) {
+                return 1;
             }
+            return multiplier * new AlphanumComparator().compare(o1, o2);
         });
 
         return super.sortCloudFiles(files);

src/main/java/com/owncloud/android/utils/FileSortOrderBySize.java

@@ -47,21 +47,18 @@ public class FileSortOrderBySize extends FileSortOrder {
     public List<OCFile> sortCloudFiles(List<OCFile> files) {
         final int multiplier = mAscending ? 1 : -1;
 
-        Collections.sort(files, new Comparator<OCFile>() {
-            @SuppressFBWarnings(value = "Bx")
-            public int compare(OCFile o1, OCFile o2) {
-                if (o1.isFolder() && o2.isFolder()) {
-                    Long obj1 = o1.getFileLength();
-                    return multiplier * obj1.compareTo(o2.getFileLength());
-                } else if (o1.isFolder()) {
-                    return -1;
+        Collections.sort(files, (o1, o2) -> {
+            if (o1.isFolder() && o2.isFolder()) {
+                Long obj1 = o1.getFileLength();
+                return multiplier * obj1.compareTo(o2.getFileLength());
+            } else if (o1.isFolder()) {
+                return -1;
 
-                } else if (o2.isFolder()) {
-                    return 1;
-                } else {
-                    Long obj1 = o1.getFileLength();
-                    return multiplier * obj1.compareTo(o2.getFileLength());
-                }
+            } else if (o2.isFolder()) {
+                return 1;
+            } else {
+                Long obj1 = o1.getFileLength();
+                return multiplier * obj1.compareTo(o2.getFileLength());
             }
         });