diff --git a/extensions/tokenizers/src/main/java/ai/djl/huggingface/tokenizers/jni/CharSpan.java b/extensions/tokenizers/src/main/java/ai/djl/huggingface/tokenizers/jni/CharSpan.java
index 6045900f1ce..7478d0e8b75 100644
--- a/extensions/tokenizers/src/main/java/ai/djl/huggingface/tokenizers/jni/CharSpan.java
+++ b/extensions/tokenizers/src/main/java/ai/djl/huggingface/tokenizers/jni/CharSpan.java
@@ -14,7 +14,9 @@
 /** A class holds character span information. */
 package ai.djl.huggingface.tokenizers.jni;
 
+/** A class holds character span information. */
 public class CharSpan {
+
     private final int start;
     private final int end;