diff --git a/pulsar-functions/api-java/src/main/java/org/apache/pulsar/functions/api/WindowContext.java b/pulsar-functions/api-java/src/main/java/org/apache/pulsar/functions/api/WindowContext.java
index be5b7692d65e4..c4814836f0a75 100644
--- a/pulsar-functions/api-java/src/main/java/org/apache/pulsar/functions/api/WindowContext.java
+++ b/pulsar-functions/api-java/src/main/java/org/apache/pulsar/functions/api/WindowContext.java
@@ -18,13 +18,12 @@
  */
 package org.apache.pulsar.functions.api;
 
-import org.apache.pulsar.common.classification.InterfaceAudience;
-import org.apache.pulsar.common.classification.InterfaceStability;
-
 import java.util.Collection;
 import java.util.Map;
 import java.util.Optional;
 import java.util.concurrent.CompletableFuture;
+import org.apache.pulsar.common.classification.InterfaceAudience;
+import org.apache.pulsar.common.classification.InterfaceStability;
 
 @InterfaceAudience.Public
 @InterfaceStability.Stable