diff --git a/core/src/main/java/org/apache/struts2/dispatcher/multipart/JakartaStreamMultiPartRequest.java b/core/src/main/java/org/apache/struts2/dispatcher/multipart/JakartaStreamMultiPartRequest.java
index 7275743e5..e6dcf63ca 100644
--- a/core/src/main/java/org/apache/struts2/dispatcher/multipart/JakartaStreamMultiPartRequest.java
+++ b/core/src/main/java/org/apache/struts2/dispatcher/multipart/JakartaStreamMultiPartRequest.java
@@ -136,7 +136,7 @@ public class JakartaStreamMultiPartRequest extends AbstractMultiPartRequest {
             return;
         }
 
-        List<String> values = parameters.computeIfAbsent(fieldName, k -> new ArrayList<>());
+        List<String> values = parameters.computeIfAbsent(fieldName, ArrayList::new);
         values.add(fieldValue);
     }