diff --git a/app/src/main/java/com/hippo/ehviewer/dao/BasicDao.java b/app/src/main/java/com/hippo/ehviewer/dao/BasicDao.kt
similarity index 100%
rename from app/src/main/java/com/hippo/ehviewer/dao/BasicDao.java
rename to app/src/main/java/com/hippo/ehviewer/dao/BasicDao.kt
diff --git a/app/src/main/java/com/hippo/ehviewer/dao/BookmarksDao.java b/app/src/main/java/com/hippo/ehviewer/dao/BookmarksDao.kt
similarity index 100%
rename from app/src/main/java/com/hippo/ehviewer/dao/BookmarksDao.java
rename to app/src/main/java/com/hippo/ehviewer/dao/BookmarksDao.kt
diff --git a/app/src/main/java/com/hippo/ehviewer/dao/DownloadDirnameDao.java b/app/src/main/java/com/hippo/ehviewer/dao/DownloadDirnameDao.kt
similarity index 100%
rename from app/src/main/java/com/hippo/ehviewer/dao/DownloadDirnameDao.java
rename to app/src/main/java/com/hippo/ehviewer/dao/DownloadDirnameDao.kt
diff --git a/app/src/main/java/com/hippo/ehviewer/dao/DownloadLabel.java b/app/src/main/java/com/hippo/ehviewer/dao/DownloadLabel.kt
similarity index 100%
rename from app/src/main/java/com/hippo/ehviewer/dao/DownloadLabel.java
rename to app/src/main/java/com/hippo/ehviewer/dao/DownloadLabel.kt
diff --git a/app/src/main/java/com/hippo/ehviewer/dao/DownloadLabelDao.java b/app/src/main/java/com/hippo/ehviewer/dao/DownloadLabelDao.kt
similarity index 100%
rename from app/src/main/java/com/hippo/ehviewer/dao/DownloadLabelDao.java
rename to app/src/main/java/com/hippo/ehviewer/dao/DownloadLabelDao.kt
diff --git a/app/src/main/java/com/hippo/ehviewer/dao/DownloadsDao.java b/app/src/main/java/com/hippo/ehviewer/dao/DownloadsDao.kt
similarity index 100%
rename from app/src/main/java/com/hippo/ehviewer/dao/DownloadsDao.java
rename to app/src/main/java/com/hippo/ehviewer/dao/DownloadsDao.kt
diff --git a/app/src/main/java/com/hippo/ehviewer/dao/FilterDao.java b/app/src/main/java/com/hippo/ehviewer/dao/FilterDao.kt
similarity index 100%
rename from app/src/main/java/com/hippo/ehviewer/dao/FilterDao.java
rename to app/src/main/java/com/hippo/ehviewer/dao/FilterDao.kt
diff --git a/app/src/main/java/com/hippo/ehviewer/dao/HistoryDao.java b/app/src/main/java/com/hippo/ehviewer/dao/HistoryDao.kt
similarity index 100%
rename from app/src/main/java/com/hippo/ehviewer/dao/HistoryDao.java
rename to app/src/main/java/com/hippo/ehviewer/dao/HistoryDao.kt
diff --git a/app/src/main/java/com/hippo/ehviewer/dao/LocalFavoritesDao.java b/app/src/main/java/com/hippo/ehviewer/dao/LocalFavoritesDao.kt
similarity index 100%
rename from app/src/main/java/com/hippo/ehviewer/dao/LocalFavoritesDao.java
rename to app/src/main/java/com/hippo/ehviewer/dao/LocalFavoritesDao.kt
diff --git a/app/src/main/java/com/hippo/ehviewer/dao/QuickSearchDao.java b/app/src/main/java/com/hippo/ehviewer/dao/QuickSearchDao.kt
similarity index 100%
rename from app/src/main/java/com/hippo/ehviewer/dao/QuickSearchDao.java
rename to app/src/main/java/com/hippo/ehviewer/dao/QuickSearchDao.kt