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