diff --git a/app/build.gradle b/app/build.gradle
index 7699b683..05a5b5c6 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -1,12 +1,12 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 33
-    buildToolsVersion "33.0.2"
+    compileSdkVersion 34
+    buildToolsVersion "34.0.0"
     defaultConfig {
         applicationId "com.mkulesh.onpc"
         minSdkVersion 14
-        targetSdkVersion 33
+        targetSdkVersion 34
         versionCode 44
         versionName "1.31"
         setProperty("archivesBaseName", "onpc-v" + versionName)
diff --git a/app/src/main/java/com/mkulesh/onpc/config/CfgAppSettings.java b/app/src/main/java/com/mkulesh/onpc/config/CfgAppSettings.java
index 0d885140..24b0225e 100644
--- a/app/src/main/java/com/mkulesh/onpc/config/CfgAppSettings.java
+++ b/app/src/main/java/com/mkulesh/onpc/config/CfgAppSettings.java
@@ -56,12 +56,14 @@ public enum Tabs
 
         final boolean isIscp, isDcp;
 
+        @SuppressWarnings("SameParameterValue")
         Tabs(final boolean isIscp, final boolean isDcp)
         {
             this.isIscp = isIscp;
             this.isDcp = isDcp;
         }
 
+        @SuppressWarnings("BooleanMethodIsAlwaysInverted")
         public boolean isVisible(ConnectionIf.ProtoType pt)
         {
             return (pt == ConnectionIf.ProtoType.ISCP && isIscp) || (pt == ConnectionIf.ProtoType.DCP && isDcp);
diff --git a/app/src/main/java/com/mkulesh/onpc/config/PreferencesMain.java b/app/src/main/java/com/mkulesh/onpc/config/PreferencesMain.java
index 9fdefabe..6e173657 100644
--- a/app/src/main/java/com/mkulesh/onpc/config/PreferencesMain.java
+++ b/app/src/main/java/com/mkulesh/onpc/config/PreferencesMain.java
@@ -63,6 +63,7 @@ private void hidePreferences()
             {
                 screen.removePreference(findPreference(CfgAppSettings.REMOTE_INTERFACE_AMP));
                 screen.removePreference(findPreference(CfgAppSettings.REMOTE_INTERFACE_CD));
+                //noinspection RedundantCast
                 final PreferenceCategory adv = (PreferenceCategory) findPreference("category_advanced");
                 if (adv != null)
                 {
diff --git a/app/src/main/java/com/mkulesh/onpc/fragments/BaseFragment.java b/app/src/main/java/com/mkulesh/onpc/fragments/BaseFragment.java
index 69e34ef3..16b97d84 100644
--- a/app/src/main/java/com/mkulesh/onpc/fragments/BaseFragment.java
+++ b/app/src/main/java/com/mkulesh/onpc/fragments/BaseFragment.java
@@ -221,6 +221,7 @@ void setButtonSelected(View b, boolean isSelected)
         Utils.setButtonSelected(activity, b, isSelected);
     }
 
+    @SuppressWarnings("SameParameterValue")
     AppCompatButton createButton(@StringRes int descriptionId,
                                  final ISCPMessage msg, Object tag, final ButtonListener listener)
     {
diff --git a/app/src/main/java/com/mkulesh/onpc/fragments/MediaFragment.java b/app/src/main/java/com/mkulesh/onpc/fragments/MediaFragment.java
index 96d0063e..7e91e1a1 100644
--- a/app/src/main/java/com/mkulesh/onpc/fragments/MediaFragment.java
+++ b/app/src/main/java/com/mkulesh/onpc/fragments/MediaFragment.java
@@ -370,6 +370,7 @@ private XmlListItemMsg findDcpMenuItem(@NonNull List<XmlListItemMsg> menuItems,
         return null;
     }
 
+    @SuppressWarnings("SameReturnValue")
     private boolean callDcpMenuItem(DcpMediaContainerMsg dcpCmd, int id)
     {
         final List<XmlListItemMsg> menuItems = activity.getStateManager().getState().cloneDcpTrackMenuItems(dcpCmd);
diff --git a/app/src/main/java/com/mkulesh/onpc/fragments/ShortcutsListAdapter.java b/app/src/main/java/com/mkulesh/onpc/fragments/ShortcutsListAdapter.java
index aa956ecc..0caf192c 100644
--- a/app/src/main/java/com/mkulesh/onpc/fragments/ShortcutsListAdapter.java
+++ b/app/src/main/java/com/mkulesh/onpc/fragments/ShortcutsListAdapter.java
@@ -47,6 +47,7 @@ void setItems(final List<CfgFavoriteShortcuts.Shortcut> newItems)
         {
             items.add(new CfgFavoriteShortcuts.Shortcut(d, d.alias));
         }
+        //noinspection ComparatorCombinators
         Collections.sort(items, (o1, o2) -> Integer.compare(o1.order, o2.order));
         notifyDataSetChanged();
     }
diff --git a/app/src/main/java/com/mkulesh/onpc/iscp/ConnectionIf.java b/app/src/main/java/com/mkulesh/onpc/iscp/ConnectionIf.java
index ebcf6abe..570b0e4e 100644
--- a/app/src/main/java/com/mkulesh/onpc/iscp/ConnectionIf.java
+++ b/app/src/main/java/com/mkulesh/onpc/iscp/ConnectionIf.java
@@ -39,5 +39,6 @@ enum ProtoType
     int getPort();
 
     @NonNull
+    @SuppressWarnings("unused")
     String getHostAndPort();
 }
diff --git a/app/src/main/java/com/mkulesh/onpc/iscp/PopupBuilder.java b/app/src/main/java/com/mkulesh/onpc/iscp/PopupBuilder.java
index ca618899..e89fc875 100644
--- a/app/src/main/java/com/mkulesh/onpc/iscp/PopupBuilder.java
+++ b/app/src/main/java/com/mkulesh/onpc/iscp/PopupBuilder.java
@@ -224,8 +224,7 @@ public void afterTextChanged(Editable s)
     private String getDefaultValue(Element box)
     {
         final String text = box.getAttribute("text");
-        //noinspection PointlessNullCheck
-        if (serviceType == ServiceType.DEEZER && text != null && "Search".equals(text)
+        if (serviceType == ServiceType.DEEZER && "Search".equals(text)
                 && artist != null && !artist.isEmpty())
         {
             return artist.contains("(") ? artist.substring(0, artist.indexOf("(")) : artist;
diff --git a/app/src/main/java/com/mkulesh/onpc/iscp/State.java b/app/src/main/java/com/mkulesh/onpc/iscp/State.java
index 87d219b2..f3b5285f 100644
--- a/app/src/main/java/com/mkulesh/onpc/iscp/State.java
+++ b/app/src/main/java/com/mkulesh/onpc/iscp/State.java
@@ -1400,7 +1400,7 @@ private boolean process(ListInfoMsg msg)
                 {
                     for (NetworkServiceMsg i : serviceItems)
                     {
-                        if (i.getService().getName().toUpperCase().equals(msg.getListedData().toUpperCase()))
+                        if (i.getService().getName().equalsIgnoreCase(msg.getListedData()))
                         {
                             return false;
                         }
@@ -1420,7 +1420,7 @@ else if (isMenuMode() || !isReceiverInformation())
             {
                 for (XmlListItemMsg i : mediaItems)
                 {
-                    if (i.getTitle().toUpperCase().equals(msg.getListedData().toUpperCase()))
+                    if (i.getTitle().equalsIgnoreCase(msg.getListedData()))
                     {
                         return false;
                     }
@@ -1578,7 +1578,7 @@ boolean listInfoConsistent()
             {
                 for (XmlListItemMsg i : mediaItems)
                 {
-                    if (i.getTitle().toUpperCase().equals(s.toUpperCase()))
+                    if (i.getTitle().equalsIgnoreCase(s))
                     {
                         return true;
                     }
diff --git a/app/src/main/java/com/mkulesh/onpc/iscp/ZonedMessage.java b/app/src/main/java/com/mkulesh/onpc/iscp/ZonedMessage.java
index f6d96c03..6f2441dc 100644
--- a/app/src/main/java/com/mkulesh/onpc/iscp/ZonedMessage.java
+++ b/app/src/main/java/com/mkulesh/onpc/iscp/ZonedMessage.java
@@ -23,7 +23,7 @@ protected ZonedMessage(EISCPMessage raw, final String[] zoneCommands) throws Exc
         super(raw);
         for (int i = 0; i < zoneCommands.length; i++)
         {
-            if (zoneCommands[i].toUpperCase().equals(raw.getCode().toUpperCase()))
+            if (zoneCommands[i].equalsIgnoreCase(raw.getCode()))
             {
                 zoneIndex = i;
                 return;
diff --git a/app/src/main/java/com/mkulesh/onpc/iscp/messages/ReceiverInformationMsg.java b/app/src/main/java/com/mkulesh/onpc/iscp/messages/ReceiverInformationMsg.java
index 21d57dc4..d102da6b 100644
--- a/app/src/main/java/com/mkulesh/onpc/iscp/messages/ReceiverInformationMsg.java
+++ b/app/src/main/java/com/mkulesh/onpc/iscp/messages/ReceiverInformationMsg.java
@@ -183,6 +183,7 @@ public String toString()
                     + ", volMax=" + volMax;
         }
 
+        @SuppressWarnings("unused")
         public boolean equals(Zone other)
         {
             return other != null &&
@@ -397,6 +398,7 @@ else if (isDab())
             return R.drawable.media_item_unknown;
         }
 
+        @SuppressWarnings("BooleanMethodIsAlwaysInverted")
         public boolean equals(Preset other)
         {
             return other != null &&
diff --git a/app/src/main/java/com/mkulesh/onpc/iscp/messages/ToneCommandMsg.java b/app/src/main/java/com/mkulesh/onpc/iscp/messages/ToneCommandMsg.java
index d86bd20b..c6d2c349 100644
--- a/app/src/main/java/com/mkulesh/onpc/iscp/messages/ToneCommandMsg.java
+++ b/app/src/main/java/com/mkulesh/onpc/iscp/messages/ToneCommandMsg.java
@@ -27,7 +27,7 @@
 /*
  * Tone/Front (for main zone) and Tone (for zones 2, 3) command
  */
-@SuppressWarnings("DuplicateExpressions")
+@SuppressWarnings({ "DuplicateExpressions", "RedundantSuppression" })
 public class ToneCommandMsg extends ZonedMessage
 {
     final static String CODE = "TFR";
diff --git a/app/src/main/java/com/mkulesh/onpc/utils/Logging.java b/app/src/main/java/com/mkulesh/onpc/utils/Logging.java
index 4f2a3656..9ad565d8 100644
--- a/app/src/main/java/com/mkulesh/onpc/utils/Logging.java
+++ b/app/src/main/java/com/mkulesh/onpc/utils/Logging.java
@@ -32,7 +32,7 @@ public final class Logging
     public static boolean isEnabled()
     {
         // Should be false in release build
-        return true;
+        return false;
     }
 
     public static boolean isTimeMsgEnabled()
@@ -56,6 +56,7 @@ public static void info(Object o, String text)
                         latestLogging.take();
                     }
                     final int l = logLineNumber.addAndGet(1);
+                    //noinspection ResultOfMethodCallIgnored
                     latestLogging.offer(String.format("#%04d: ", l) + out);
                 }
                 catch (Exception e)
diff --git a/app/src/main/java/com/mkulesh/onpc/utils/Utils.java b/app/src/main/java/com/mkulesh/onpc/utils/Utils.java
index 133d6b9c..2cc954c1 100644
--- a/app/src/main/java/com/mkulesh/onpc/utils/Utils.java
+++ b/app/src/main/java/com/mkulesh/onpc/utils/Utils.java
@@ -68,6 +68,7 @@
 
 public class Utils
 {
+    @SuppressWarnings("CharsetObjectCanBeUsed")
     public static final Charset UTF_8 = Charset.forName("UTF-8");
 
     public static byte[] catBuffer(byte[] bytes, int offset, int length)
@@ -368,10 +369,9 @@ public static int timeToSeconds(final String timestampStr)
             }
             else
             {
-                int hours = 0;
                 int minutes = Integer.parseInt(tokens[0]);
                 int seconds = Integer.parseInt(tokens[1]);
-                return 3600 * hours + 60 * minutes + seconds;
+                return 60 * minutes + seconds;
             }
         }
         catch (Exception ex)
@@ -488,6 +488,7 @@ public static String getStringPref(@NonNull final SharedPreferences preferences,
                                        @NonNull final String par, @NonNull final String def)
     {
         final String val = preferences.getString(par, def);
+        //noinspection ConstantConditions
         return val == null ? def : val;
     }
 
diff --git a/app/src/main/java/com/mkulesh/onpc/widgets/HorizontalNumberPicker.java b/app/src/main/java/com/mkulesh/onpc/widgets/HorizontalNumberPicker.java
index 5382703a..cdd64fb3 100644
--- a/app/src/main/java/com/mkulesh/onpc/widgets/HorizontalNumberPicker.java
+++ b/app/src/main/java/com/mkulesh/onpc/widgets/HorizontalNumberPicker.java
@@ -117,8 +117,8 @@ private int convertToInt(Editable field, int inc)
     {
         try
         {
-            final int r = Integer.valueOf(field.length() > 0 ? field.toString() : "") + inc;
-            return ((r < minValue) ? minValue : ((r > maxValue) ? maxValue : r));
+            final int r = Integer.parseInt(field.length() > 0 ? field.toString() : "") + inc;
+            return Math.max(minValue, Math.min(maxValue, r));
         }
         catch (Exception e)
         {