diff --git a/app/src/main/java/com/hippo/ehviewer/ui/CommonOperations.java b/app/src/main/java/com/hippo/ehviewer/ui/CommonOperations.kt
similarity index 100%
rename from app/src/main/java/com/hippo/ehviewer/ui/CommonOperations.java
rename to app/src/main/java/com/hippo/ehviewer/ui/CommonOperations.kt