Code cleanup

app/src/main/java/com/hippo/beerbelly/DiskLruCache.java

@@ -231,6 +231,21 @@ public final class DiskLruCache implements Closeable {
         cache = new DiskLruCache(directory, appVersion, valueCount, maxSize);
         cache.rebuildJournal();
         return cache;
+    }
+
+    private static void deleteIfExists(File file) throws IOException {
+        if (file.exists() && !file.delete()) {
+            throw new IOException();
+        }
+    }
+
+    private static void renameTo(File from, File to, boolean deleteDestination) throws IOException {
+        if (deleteDestination) {
+            deleteIfExists(to);
+        }
+        if (!from.renameTo(to)) {
+            throw new IOException();
+        }
     }    private final Callable<Void> cleanupCallable = new Callable<>() {
         public Void call() throws Exception {
             synchronized (DiskLruCache.this) {
@@ -247,21 +262,6 @@ public final class DiskLruCache implements Closeable {
         }
     };
 
-    private static void deleteIfExists(File file) throws IOException {
-        if (file.exists() && !file.delete()) {
-            throw new IOException();
-        }
-    }
-
-    private static void renameTo(File from, File to, boolean deleteDestination) throws IOException {
-        if (deleteDestination) {
-            deleteIfExists(to);
-        }
-        if (!from.renameTo(to)) {
-            throw new IOException();
-        }
-    }
-
     private static String inputStreamToString(InputStream in) throws IOException {
         return Util.readFully(new InputStreamReader(in, Util.UTF_8));
     }