Sort methods.
diff --git a/src/test/java/org/apache/commons/io/input/ObservableInputStreamTest.java b/src/test/java/org/apache/commons/io/input/ObservableInputStreamTest.java
index adde785..cb5c43a 100644
--- a/src/test/java/org/apache/commons/io/input/ObservableInputStreamTest.java
+++ b/src/test/java/org/apache/commons/io/input/ObservableInputStreamTest.java
@@ -34,6 +34,12 @@ private static class LastByteKeepingObserver extends Observer {
         private boolean closed;
 
         @Override
+        public void closed() throws IOException {
+            super.closed();
+            closed = true;
+        }
+
+        @Override
         public void data(final int pByte) throws IOException {
             super.data(pByte);
             lastByteSeen = pByte;
@@ -44,12 +50,6 @@ public void finished() throws IOException {
             super.finished();
             finished = true;
         }
-
-        @Override
-        public void closed() throws IOException {
-            super.closed();
-            closed = true;
-        }
     }
 
     private static class LastBytesKeepingObserver extends Observer {