Use try-with-resources.
diff --git a/src/test/java/org/apache/commons/lang3/event/EventListenerSupportTest.java b/src/test/java/org/apache/commons/lang3/event/EventListenerSupportTest.java
index facff22..9371339 100644
--- a/src/test/java/org/apache/commons/lang3/event/EventListenerSupportTest.java
+++ b/src/test/java/org/apache/commons/lang3/event/EventListenerSupportTest.java
@@ -142,10 +142,9 @@ public void testSerialization() throws IOException, ClassNotFoundException, Prop
//serialize:
final ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
- final ObjectOutputStream objectOutputStream = new ObjectOutputStream(outputStream);
-
- objectOutputStream.writeObject(listenerSupport);
- objectOutputStream.close();
+ try (final ObjectOutputStream objectOutputStream = new ObjectOutputStream(outputStream)) {
+ objectOutputStream.writeObject(listenerSupport);
+ }
//deserialize:
@SuppressWarnings("unchecked")
