diff --git a/forge-gui-mobile/src/forge/deck/FDeckChooser.java b/forge-gui-mobile/src/forge/deck/FDeckChooser.java
index 360fce30228..f3ee6bbe455 100644
--- a/forge-gui-mobile/src/forge/deck/FDeckChooser.java
+++ b/forge-gui-mobile/src/forge/deck/FDeckChooser.java
@@ -112,7 +112,7 @@ public class FDeckChooser extends FScreen {
         deckChooser.optionPane = new FOptionPane(null, null, title, null, container, ImmutableList.of(Forge.getLocalizer().getInstance().getMessage("lblOK"), Forge.getLocalizer().getInstance().getMessage("lblCancel")), 0, result -> {
             if (result == 0) {
                 if (callback != null) {
-                    callback.run(deckChooser.getDeck());
+                    callback.accept(deckChooser.getDeck());
                 }
             }
         }) {
diff --git a/forge-gui-mobile/src/forge/deck/FDeckEditor.java b/forge-gui-mobile/src/forge/deck/FDeckEditor.java
index 69f5a2e1728..41cb685e509 100644
--- a/forge-gui-mobile/src/forge/deck/FDeckEditor.java
+++ b/forge-gui-mobile/src/forge/deck/FDeckEditor.java
@@ -561,25 +561,22 @@ public class FDeckEditor extends TabPageScreen<FDeckEditor> {
                 if (editorConfig.getGameType() != null && editorConfig.hasInfiniteCardPool()) {
                     addItem(new FMenuItem(localizer.getMessage("lblImportFromClipboard"), Forge.hdbuttons ? FSkinImage.HDIMPORT : FSkinImage.OPEN, e -> {
                         FDeckImportDialog dialog = new FDeckImportDialog(!deck.isEmpty(), FDeckEditor.this.editorConfig);
-                        dialog.setCallback(new Callback<>() {
-                            @Override
-                            public void run(Deck importedDeck) {
-                                if (deck != null && importedDeck.hasName()) {
-                                    deck.setName(importedDeck.getName());
-                                    setHeaderText(importedDeck.getName());
+                        dialog.setCallback(importedDeck -> {
+                            if (deck != null && importedDeck.hasName()) {
+                                deck.setName(importedDeck.getName());
+                                setHeaderText(importedDeck.getName());
+                            }
+                            if (dialog.createNewDeck()) {
+                                for (Entry<DeckSection, CardPool> section : importedDeck) {
+                                    DeckSectionPage page = getPageForSection(section.getKey());
+                                    if (page != null)
+                                        page.setCards(section.getValue());
                                 }
-                                if (dialog.createNewDeck()) {
-                                    for (Entry<DeckSection, CardPool> section : importedDeck) {
-                                        DeckSectionPage page = getPageForSection(section.getKey());
-                                        if (page != null)
-                                            page.setCards(section.getValue());
-                                    }
-                                } else {
-                                    for (Entry<DeckSection, CardPool> section : importedDeck) {
-                                        DeckSectionPage page = getPageForSection(section.getKey());
-                                        if (page != null)
-                                            page.addCards(section.getValue());
-                                    }
+                            } else {
+                                for (Entry<DeckSection, CardPool> section : importedDeck) {
+                                    DeckSectionPage page = getPageForSection(section.getKey());
+                                    if (page != null)
+                                        page.addCards(section.getValue());
                                 }
                             }
                         });
@@ -1828,16 +1825,13 @@ public class FDeckEditor extends TabPageScreen<FDeckEditor> {
                                 sortedOptions.add(option);
                             }
                         }
-                        GuiChoose.oneOrNone(Forge.getLocalizer().getMessage("lblSelectPreferredArt") + " " + card.getName(), sortedOptions, new Callback<>() {
-                            @Override
-                            public void run(PaperCard result) {
-                                if (result != null) {
-                                    if (result != card) {
-                                        cardManager.replaceAll(card, result);
-                                    }
-                                    prefs.setPreferredArt(result.getEdition(), result.getArtIndex());
-                                    CardPreferences.save();
+                        GuiChoose.oneOrNone(Forge.getLocalizer().getMessage("lblSelectPreferredArt") + " " + card.getName(), sortedOptions, result -> {
+                            if (result != null) {
+                                if (result != card) {
+                                    cardManager.replaceAll(card, result);
                                 }
+                                prefs.setPreferredArt(result.getEdition(), result.getArtIndex());
+                                CardPreferences.save();
                             }
                         });
                     }));
diff --git a/forge-gui-mobile/src/forge/screens/settings/GuiDownloader.java b/forge-gui-mobile/src/forge/screens/settings/GuiDownloader.java
index dbbccb30601..ea92bd04841 100644
--- a/forge-gui-mobile/src/forge/screens/settings/GuiDownloader.java
+++ b/forge-gui-mobile/src/forge/screens/settings/GuiDownloader.java
@@ -52,7 +52,7 @@ public class GuiDownloader extends FDialog {
             service.setCancel(true);
             hide();
             if (callback != null) {
-                callback.run(getButton(0).getText() == "OK"); //determine result based on whether download finished
+                callback.accept(getButton(0).getText() == "OK"); //determine result based on whether download finished
             }
         }
     };
diff --git a/forge-gui-mobile/src/forge/toolbox/FFileChooser.java b/forge-gui-mobile/src/forge/toolbox/FFileChooser.java
index 374b125b0a7..b8e0c2405fb 100644
--- a/forge-gui-mobile/src/forge/toolbox/FFileChooser.java
+++ b/forge-gui-mobile/src/forge/toolbox/FFileChooser.java
@@ -77,8 +77,8 @@ public class FFileChooser extends FDialog {
                         refreshFileList();
                         return;
                     }
-                } catch (Exception e) {
-                    e.printStackTrace();
+                } catch (Exception e1) {
+                    e1.printStackTrace();
                 }
                 FOptionPane.showErrorDialog(Forge.getLocalizer().getMessage("lblEnterFolderNameNotValid", result), Forge.getLocalizer().getMessage("lblInvalidName"));
             });
@@ -229,8 +229,8 @@ public class FFileChooser extends FDialog {
                     return;
                 }
             }
-            catch (Exception e) {
-                e.printStackTrace();
+            catch (Exception e2) {
+                e2.printStackTrace();
             }
             FOptionPane.showErrorDialog(Forge.getLocalizer().getMessage("lblEnterNameNotValid", result), Forge.getLocalizer().getMessage("lblInvalidName"));
         });
@@ -259,8 +259,8 @@ public class FFileChooser extends FDialog {
                             return;
                         }
                     }
-                    catch (Exception ex) {
-                        ex.printStackTrace();
+                    catch (Exception e3) {
+                        e3.printStackTrace();
                     }
                     FOptionPane.showErrorDialog(Forge.getLocalizer().getMessage("lblCouldBotDeleteFile"));
                 }