diff --git a/app/src/main/java/com/cappielloantonio/tempo/repository/AlbumRepository.java b/app/src/main/java/com/cappielloantonio/tempo/repository/AlbumRepository.java
index 5149af9d..6dc8d3e3 100644
--- a/app/src/main/java/com/cappielloantonio/tempo/repository/AlbumRepository.java
+++ b/app/src/main/java/com/cappielloantonio/tempo/repository/AlbumRepository.java
@@ -275,7 +275,7 @@ public class AlbumRepository {
                     @Override
                     public void onResponse(@NonNull Call<ApiResponse> call, @NonNull Response<ApiResponse> response) {
                         if (response.isSuccessful() && response.body() != null && response.body().getSubsonicResponse().getAlbumList2() != null && response.body().getSubsonicResponse().getAlbumList2().getAlbums() != null) {
-                            if (response.body().getSubsonicResponse().getAlbumList2().getAlbums().size() > 0 && !response.body().getSubsonicResponse().getAlbumList2().getAlbums().isEmpty()) {
+                            if (!response.body().getSubsonicResponse().getAlbumList2().getAlbums().isEmpty() && !response.body().getSubsonicResponse().getAlbumList2().getAlbums().isEmpty()) {
                                 callback.onLoadYear(response.body().getSubsonicResponse().getAlbumList2().getAlbums().get(0).getYear());
                             } else {
                                 callback.onLoadYear(-1);
diff --git a/app/src/main/java/com/cappielloantonio/tempo/ui/dialog/PlaylistChooserDialog.java b/app/src/main/java/com/cappielloantonio/tempo/ui/dialog/PlaylistChooserDialog.java
index 8ce5c48e..f0266c84 100644
--- a/app/src/main/java/com/cappielloantonio/tempo/ui/dialog/PlaylistChooserDialog.java
+++ b/app/src/main/java/com/cappielloantonio/tempo/ui/dialog/PlaylistChooserDialog.java
@@ -83,7 +83,7 @@ public class PlaylistChooserDialog extends DialogFragment implements ClickCallba
 
         playlistChooserViewModel.getPlaylistList(requireActivity()).observe(requireActivity(), playlists -> {
             if (playlists != null) {
-                if (playlists.size() > 0) {
+                if (!playlists.isEmpty()) {
                     if (bind != null) bind.noPlaylistsCreatedTextView.setVisibility(View.GONE);
                     if (bind != null) bind.playlistDialogRecyclerView.setVisibility(View.VISIBLE);
                     playlistDialogHorizontalAdapter.setItems(playlists);
diff --git a/app/src/main/java/com/cappielloantonio/tempo/ui/fragment/LoginFragment.java b/app/src/main/java/com/cappielloantonio/tempo/ui/fragment/LoginFragment.java
index f88e19b5..63f6fe3b 100644
--- a/app/src/main/java/com/cappielloantonio/tempo/ui/fragment/LoginFragment.java
+++ b/app/src/main/java/com/cappielloantonio/tempo/ui/fragment/LoginFragment.java
@@ -92,7 +92,7 @@ public class LoginFragment extends Fragment implements ClickCallback {
         serverAdapter = new ServerAdapter(this);
         bind.serverListRecyclerView.setAdapter(serverAdapter);
         loginViewModel.getServerList().observe(getViewLifecycleOwner(), servers -> {
-            if (servers.size() > 0) {
+            if (!servers.isEmpty()) {
                 if (bind != null) bind.noServerAddedTextView.setVisibility(View.GONE);
                 if (bind != null) bind.serverListRecyclerView.setVisibility(View.VISIBLE);
                 serverAdapter.setItems(servers);
diff --git a/app/src/main/java/com/cappielloantonio/tempo/ui/fragment/PlaylistPageFragment.java b/app/src/main/java/com/cappielloantonio/tempo/ui/fragment/PlaylistPageFragment.java
index 44b1c59c..1ef5c931 100644
--- a/app/src/main/java/com/cappielloantonio/tempo/ui/fragment/PlaylistPageFragment.java
+++ b/app/src/main/java/com/cappielloantonio/tempo/ui/fragment/PlaylistPageFragment.java
@@ -167,7 +167,7 @@ public class PlaylistPageFragment extends Fragment implements ClickCallback {
 
                 // Pic top-left
                 CustomGlideRequest.Builder
-                        .from(requireContext(), songs.size() > 0 ? songs.get(0).getCoverArtId() : playlistPageViewModel.getPlaylist().getCoverArtId(), CustomGlideRequest.ResourceType.Song)
+                        .from(requireContext(), !songs.isEmpty() ? songs.get(0).getCoverArtId() : playlistPageViewModel.getPlaylist().getCoverArtId(), CustomGlideRequest.ResourceType.Song)
                         .build()
                         .transform(new GranularRoundedCorners(CustomGlideRequest.CORNER_RADIUS, 0, 0, 0))
                         .into(bind.playlistCoverImageViewTopLeft);
diff --git a/app/src/main/java/com/cappielloantonio/tempo/ui/fragment/bottomsheetdialog/AlbumBottomSheetDialog.java b/app/src/main/java/com/cappielloantonio/tempo/ui/fragment/bottomsheetdialog/AlbumBottomSheetDialog.java
index a8059622..5ce0b87f 100644
--- a/app/src/main/java/com/cappielloantonio/tempo/ui/fragment/bottomsheetdialog/AlbumBottomSheetDialog.java
+++ b/app/src/main/java/com/cappielloantonio/tempo/ui/fragment/bottomsheetdialog/AlbumBottomSheetDialog.java
@@ -117,7 +117,7 @@ public class AlbumBottomSheetDialog extends BottomSheetDialogFragment implements
                 public void onLoadMedia(List<?> media) {
                     MusicUtil.ratingFilter((ArrayList<Child>) media);
 
-                    if (media.size() > 0) {
+                    if (!media.isEmpty()) {
                         MediaManager.startQueue(mediaBrowserListenableFuture, (ArrayList<Child>) media, 0);
                         ((MainActivity) requireActivity()).setBottomSheetInPeek(true);
                     }
diff --git a/app/src/main/java/com/cappielloantonio/tempo/ui/fragment/bottomsheetdialog/ArtistBottomSheetDialog.java b/app/src/main/java/com/cappielloantonio/tempo/ui/fragment/bottomsheetdialog/ArtistBottomSheetDialog.java
index fde89f3b..b55d8494 100644
--- a/app/src/main/java/com/cappielloantonio/tempo/ui/fragment/bottomsheetdialog/ArtistBottomSheetDialog.java
+++ b/app/src/main/java/com/cappielloantonio/tempo/ui/fragment/bottomsheetdialog/ArtistBottomSheetDialog.java
@@ -91,7 +91,7 @@ public class ArtistBottomSheetDialog extends BottomSheetDialogFragment implement
             artistRepository.getInstantMix(artist, 20).observe(getViewLifecycleOwner(), songs -> {
                 MusicUtil.ratingFilter(songs);
 
-                if (songs.size() > 0) {
+                if (!songs.isEmpty()) {
                     MediaManager.startQueue(mediaBrowserListenableFuture, songs, 0);
                     ((MainActivity) requireActivity()).setBottomSheetInPeek(true);
                 }
@@ -106,7 +106,7 @@ public class ArtistBottomSheetDialog extends BottomSheetDialogFragment implement
             artistRepository.getRandomSong(artist, 50).observe(getViewLifecycleOwner(), songs -> {
                 MusicUtil.ratingFilter(songs);
 
-                if (songs.size() > 0) {
+                if (!songs.isEmpty()) {
                     MediaManager.startQueue(mediaBrowserListenableFuture, songs, 0);
                     ((MainActivity) requireActivity()).setBottomSheetInPeek(true);
 
diff --git a/app/src/main/java/com/cappielloantonio/tempo/ui/fragment/bottomsheetdialog/SongBottomSheetDialog.java b/app/src/main/java/com/cappielloantonio/tempo/ui/fragment/bottomsheetdialog/SongBottomSheetDialog.java
index d7d444dc..970c4e9c 100644
--- a/app/src/main/java/com/cappielloantonio/tempo/ui/fragment/bottomsheetdialog/SongBottomSheetDialog.java
+++ b/app/src/main/java/com/cappielloantonio/tempo/ui/fragment/bottomsheetdialog/SongBottomSheetDialog.java
@@ -121,7 +121,7 @@ public class SongBottomSheetDialog extends BottomSheetDialogFragment implements
                     return;
                 }
 
-                if (songs.size() > 0) {
+                if (!songs.isEmpty()) {
                     MediaManager.enqueue(mediaBrowserListenableFuture, songs, true);
                     dismissBottomSheet();
                 }
diff --git a/app/src/main/java/com/cappielloantonio/tempo/util/MusicUtil.java b/app/src/main/java/com/cappielloantonio/tempo/util/MusicUtil.java
index 25278e89..6b0b23fe 100644
--- a/app/src/main/java/com/cappielloantonio/tempo/util/MusicUtil.java
+++ b/app/src/main/java/com/cappielloantonio/tempo/util/MusicUtil.java
@@ -222,7 +222,7 @@ public class MusicUtil {
     public static List<String> getReadableStrings(List<String> strings) {
         List<String> readableStrings = new ArrayList<>();
 
-        if (strings.size() > 0) {
+        if (!strings.isEmpty()) {
             for (String string : strings) {
                 if (string != null) {
                     readableStrings.add(Html.fromHtml(string, Html.FROM_HTML_MODE_COMPACT).toString());