diff --git a/app/src/main/java/com/hippo/ehviewer/dao/BookmarkInfo.java b/app/src/main/java/com/hippo/ehviewer/dao/BookmarkInfo.kt
similarity index 100%
rename from app/src/main/java/com/hippo/ehviewer/dao/BookmarkInfo.java
rename to app/src/main/java/com/hippo/ehviewer/dao/BookmarkInfo.kt
diff --git a/app/src/main/java/com/hippo/ehviewer/dao/DownloadDirname.java b/app/src/main/java/com/hippo/ehviewer/dao/DownloadDirname.kt
similarity index 100%
rename from app/src/main/java/com/hippo/ehviewer/dao/DownloadDirname.java
rename to app/src/main/java/com/hippo/ehviewer/dao/DownloadDirname.kt
diff --git a/app/src/main/java/com/hippo/ehviewer/dao/DownloadInfo.java b/app/src/main/java/com/hippo/ehviewer/dao/DownloadInfo.kt
similarity index 100%
rename from app/src/main/java/com/hippo/ehviewer/dao/DownloadInfo.java
rename to app/src/main/java/com/hippo/ehviewer/dao/DownloadInfo.kt
diff --git a/app/src/main/java/com/hippo/ehviewer/dao/Filter.java b/app/src/main/java/com/hippo/ehviewer/dao/Filter.kt
similarity index 100%
rename from app/src/main/java/com/hippo/ehviewer/dao/Filter.java
rename to app/src/main/java/com/hippo/ehviewer/dao/Filter.kt
diff --git a/app/src/main/java/com/hippo/ehviewer/dao/HistoryInfo.java b/app/src/main/java/com/hippo/ehviewer/dao/HistoryInfo.kt
similarity index 100%
rename from app/src/main/java/com/hippo/ehviewer/dao/HistoryInfo.java
rename to app/src/main/java/com/hippo/ehviewer/dao/HistoryInfo.kt
diff --git a/app/src/main/java/com/hippo/ehviewer/dao/LocalFavoriteInfo.java b/app/src/main/java/com/hippo/ehviewer/dao/LocalFavoriteInfo.kt
similarity index 100%
rename from app/src/main/java/com/hippo/ehviewer/dao/LocalFavoriteInfo.java
rename to app/src/main/java/com/hippo/ehviewer/dao/LocalFavoriteInfo.kt
diff --git a/app/src/main/java/com/hippo/ehviewer/dao/QuickSearch.java b/app/src/main/java/com/hippo/ehviewer/dao/QuickSearch.kt
similarity index 100%
rename from app/src/main/java/com/hippo/ehviewer/dao/QuickSearch.java
rename to app/src/main/java/com/hippo/ehviewer/dao/QuickSearch.kt