Made utility classes final to explicitly forbid it's inheritance

Mage.Client/src/main/java/mage/client/SessionHandler.java

@@ -20,7 +20,7 @@
 /**
  * Created by IGOUDT on 15-9-2016.
  */
-public class SessionHandler {
+public final class SessionHandler {
 
     private static Session session;
 

Mage.Client/src/main/java/mage/client/chat/LocalCommands.java

@@ -12,7 +12,7 @@
 import java.util.StringTokenizer;
 import java.util.UUID;
 
-public class LocalCommands {
+public final class LocalCommands {
 
     private static final DateFormat timeFormatter = DateFormat.getTimeInstance(DateFormat.SHORT);
 

Mage.Client/src/main/java/mage/client/components/ext/TestMageFloatPane.java

@@ -7,7 +7,7 @@
 /**
  * @author ayratn
  */
-public class TestMageFloatPane {
+public final class TestMageFloatPane {
 
     public static void main(String... args) {
         JFrame f = new JFrame();

Mage.Client/src/main/java/mage/client/deck/generator/DeckGenerator.java

@@ -52,7 +52,7 @@
  * @author nantuko
  * @author Simown
  */
-public class DeckGenerator {
+public final class DeckGenerator {
 
     public static class DeckGeneratorException extends RuntimeException {
 

Mage.Client/src/main/java/mage/client/deckeditor/collection/viewer/CollectionViewerPanel.java

@@ -57,7 +57,7 @@ public final class CollectionViewerPanel extends JPanel {
     private static final Logger logger = Logger.getLogger(CollectionViewerPanel.class);
 
     protected static final String LAYOYT_CONFIG_KEY = "collectionViewerLayoutConfig";
-    protected static final String FORMAT_CONFIG_KEY = "collectionViewerFormat";
+    private static final String FORMAT_CONFIG_KEY = "collectionViewerFormat";
 
     public CollectionViewerPanel() {
         initComponents();

Mage.Client/src/main/java/mage/client/deckeditor/collection/viewer/MageBook.java

@@ -346,7 +346,7 @@ public void updateSize(String size) {
     /**
      * Defines the position of the next card on the mage book
      */
-    private static class CardPosition {
+    private static final class CardPosition {
 
         private CardPosition() {
         }

Mage.Client/src/main/java/mage/client/deckeditor/table/CardHelper.java

@@ -37,7 +37,7 @@
  * 
  * @author nantuko
  */
-public class CardHelper {
+public final class CardHelper {
     private CardHelper() {
     }
 

Mage.Client/src/main/java/mage/client/preference/MagePreferences.java

@@ -8,7 +8,7 @@
 import java.util.prefs.Preferences;
 
 // TODO: Move all preference related logic from MageFrame and PreferencesDialog to this class.
-public class MagePreferences {
+public final class MagePreferences {
 
     private static final String KEY_SERVER_ADDRESS = "serverAddress";
     private static final String KEY_SERVER_PORT = "serverPort";

Mage.Client/src/main/java/mage/client/util/CardsViewUtil.java

@@ -39,7 +39,7 @@
  *
  * @author BetaSteward_at_googlemail.com
  */
-public class CardsViewUtil {
+public final class CardsViewUtil {
 
     public static CardsView convertSimple(SimpleCardsView view) {
         CardsView cards = new CardsView();

Mage.Client/src/main/java/mage/client/util/Config.java

@@ -38,7 +38,7 @@
  *
  * @author BetaSteward_at_googlemail.com
  */
-public class Config {
+public final class Config {
 
     // TODO: Remove this class completely
     private static final Logger logger = Logger.getLogger(Config.class);

Mage.Client/src/main/java/mage/client/util/DeckUtil.java

@@ -41,7 +41,7 @@
  *
  * @author nantuko
  */
-public class DeckUtil {
+public final class DeckUtil {
 
     private static final Logger log = Logger.getLogger(DeckUtil.class);
 

Mage.Client/src/main/java/mage/client/util/Format.java

@@ -34,7 +34,7 @@
  *
  * @author LevelX2
  */
-public class Format {
+public final class Format {
 
     /**
      * calculates the duration between two dates and returns a string in the format hhh:mm:ss

Mage.Client/src/main/java/mage/client/util/GUISizeHelper.java

@@ -19,7 +19,7 @@
  *
  * @author LevelX2
  */
-public class GUISizeHelper {
+public final class GUISizeHelper {
 
     // relate the native image card size to a value of the size scale
     final static int CARD_IMAGE_WIDTH = 312;

Mage.Client/src/main/java/mage/client/util/IgnoreList.java

@@ -8,7 +8,7 @@
 import java.util.Arrays;
 import java.util.Set;
 
-public class IgnoreList {
+public final class IgnoreList {
 
     private static final String USAGE = "<br/><font color=yellow>\\ignore - shows current ignore list on this server."
             + "<br/>\\ignore [username] - add a username to your ignore list on this server."

Mage.Client/src/main/java/mage/client/util/ImageCaches.java

@@ -34,7 +34,7 @@
  *
  * @author draxdyn
  */
-public class ImageCaches {
+public final class ImageCaches {
 
     private final static ArrayList<Map> IMAGE_CACHES;
 

Mage.Client/src/main/java/mage/client/util/ImageHelper.java

@@ -47,7 +47,7 @@
  *
  * @author BetaSteward_at_googlemail.com
  */
-public class ImageHelper {
+public final class ImageHelper {
 
     protected static final HashMap<String, BufferedImage> images = new HashMap<>();
     protected static final HashMap<String, BufferedImage> backgrounds = new HashMap<>();

Mage.Client/src/main/java/mage/client/util/SystemUtil.java

@@ -6,7 +6,7 @@
 /**
  * @author noxx
  */
-public class SystemUtil {
+public final class SystemUtil {
 
     public static final String OS_NAME = "os.name";
     public static final String MAC_OS_X = "Mac OS X";

Mage.Client/src/main/java/mage/client/util/TransformedImageCache.java

@@ -20,7 +20,7 @@
  *
  * @author user
  */
-public class TransformedImageCache {
+public final class TransformedImageCache {
 
     private final static class Key {
 

Mage.Client/src/main/java/mage/client/util/gui/ArrowUtil.java

@@ -14,7 +14,7 @@
 /**
  * @author noxx
  */
-public class ArrowUtil {
+public final class ArrowUtil {
 
     private ArrowUtil() {}
 

Mage.Client/src/main/java/mage/client/util/gui/GuiDisplayUtil.java

@@ -26,7 +26,7 @@
 import org.mage.card.arcane.ManaSymbols;
 import org.mage.card.arcane.UI;
 
-public class GuiDisplayUtil {
+public final class GuiDisplayUtil {
 
     private static final Font cardNameFont = new Font("Calibri", Font.BOLD, 15);
     private static final Insets DEFAULT_INSETS = new Insets(0, 0, 70, 25);

Mage.Client/src/main/java/mage/client/util/gui/TableUtil.java

@@ -13,7 +13,7 @@
  *
  * @author LevelX2
  */
-public class TableUtil {
+public final class TableUtil {
 
     /**
      *

Mage.Client/src/main/java/mage/client/util/gui/countryBox/CountryUtil.java

@@ -18,7 +18,7 @@
  *
  * @author LevelX2
  */
-public class CountryUtil {
+public final class CountryUtil {
 
     private static final Logger LOGGER = Logger.getLogger(CountryUtil.class);
     private static final Map<String, ImageIcon> FLAG_ICON_CACHE = new HashMap<>();

Mage.Client/src/main/java/mage/client/util/object/SaveObjectUtil.java

@@ -13,7 +13,7 @@
  *
  * @author ayrat
  */
-public class SaveObjectUtil {
+public final class SaveObjectUtil {
 
     /**
      * Defines should data be saved or not.

Mage.Client/src/main/java/mage/client/util/sets/ConstructedFormats.java

@@ -16,7 +16,7 @@
  *
  * @author nantuko
  */
-public class ConstructedFormats {
+public final class ConstructedFormats {
 
     public static final String ALL = "- All Sets";
     public static final String STANDARD = "- Standard";

Mage.Client/src/main/java/mage/client/util/stats/MemoryUsageStatUtil.java

@@ -3,7 +3,7 @@
 /**
  * @author noxx
  */
-public class MemoryUsageStatUtil {
+public final class MemoryUsageStatUtil {
 
     private MemoryUsageStatUtil() {}
 

Mage.Client/src/main/java/org/mage/card/arcane/CardRendererUtils.java

@@ -22,7 +22,7 @@
  *
  * Various static utilities for use in the card renderer
  */
-public class CardRendererUtils {
+public final class CardRendererUtils {
 
     /**
      * Convert an abstract image, whose underlying implementation may or may not

Mage.Client/src/main/java/org/mage/card/arcane/ManaSymbols.java

@@ -31,7 +31,7 @@
 import org.apache.log4j.Logger;
 import org.mage.plugins.card.constants.Constants;
 
-public class ManaSymbols {
+public final class ManaSymbols {
 
     private static final Logger LOGGER = Logger.getLogger(ManaSymbols.class);
     private static final Map<Integer, Map<String, BufferedImage>> manaImages = new HashMap<>();

Mage.Client/src/main/java/org/mage/card/arcane/TextboxRuleParser.java

@@ -18,7 +18,7 @@
  *
  * @author StravantUser
  */
-public class TextboxRuleParser {
+public final class TextboxRuleParser {
 
     private static final Logger LOGGER = Logger.getLogger(CardPanel.class);
 

Mage.Client/src/main/java/org/mage/card/arcane/UI.java

@@ -46,7 +46,7 @@
 /**
  * UI utility functions.
  */
-public class UI {
+public final class UI {
     private static final ConcurrentMap<URI, Image> imageCache = new ConcurrentHashMap<>();
 
     public static JToggleButton getToggleButton () {

Mage.Client/src/main/java/org/mage/card/arcane/Util.java

@@ -15,7 +15,7 @@
 import javax.swing.SwingUtilities;
 
 @SuppressWarnings({ "rawtypes", "unchecked" })
-public class Util {
+public final class Util {
     public static final boolean isMac = System.getProperty("os.name").toLowerCase().contains("mac");
     public static final boolean isWindows = !System.getProperty("os.name").toLowerCase().contains("windows");
 

Mage.Client/src/main/java/org/mage/plugins/card/constants/Constants.java

@@ -3,7 +3,7 @@
 import java.awt.Rectangle;
 import java.io.File;
 
-public class Constants {
+public final class Constants {
 
     public static final String RESOURCE_PATH_SET = File.separator + "sets" + File.separator;
 

Mage.Client/src/main/java/org/mage/plugins/card/utils/CardImageUtils.java

@@ -15,7 +15,7 @@
 import org.mage.plugins.card.images.CardDownloadData;
 import org.mage.plugins.card.properties.SettingsManager;
 
-public class CardImageUtils {
+public final class CardImageUtils {
 
     private static final HashMap<CardDownloadData, String> pathCache = new HashMap<>();
     private static final Logger log = Logger.getLogger(CardImageUtils.class);

Mage.Client/src/main/java/org/mage/plugins/card/utils/Transparency.java

@@ -11,14 +11,14 @@
 import java.awt.image.ImageProducer;
 import java.awt.image.RGBImageFilter;
 
-public class Transparency {
+public final class Transparency {
     public static Image makeColorTransparent(Image im, final Color color) {
         ImageFilter filter = new RGBImageFilter() {
             // the color we are looking for... Alpha bits are set to opaque
             public final int markerRGB = color.getRGB() | 0xFF000000;
 
             @Override
-            public final int filterRGB(int x, int y, int rgb) {
+            public int filterRGB(int x, int y, int rgb) {
                 if ((rgb | 0xFF000000) == markerRGB) {
                     // Mark the alpha bits as zero - transparent
                     return 0x00FFFFFF & rgb;

Mage.Common/src/mage/db/EntityManagerTest.java

@@ -10,7 +10,7 @@
 /**
  * @author noxx
  */
-public class EntityManagerTest {
+public final class EntityManagerTest {
 
     private static DateFormat timeFormatter = SimpleDateFormat.getTimeInstance(SimpleDateFormat.FULL);
 

Mage.Common/src/mage/db/Statistics.java

@@ -7,7 +7,7 @@
 /**
  * @author noxx
  */
-public class Statistics {
+public final class Statistics {
 
     public static void main(String[] args) throws Exception {
         List<Log> logs = EntityManager.instance.getAllLogs();

Mage.Common/src/mage/utils/CardUtil.java

@@ -13,7 +13,7 @@
  * @version 0.1 02.11.2010
  * @author nantuko
  */
-public class CardUtil {
+public final class CardUtil {
 
     private static final String regexBlack = ".*\\x7b.{0,2}B.{0,2}\\x7d.*";
     private static final String regexBlue = ".*\\x7b.{0,2}U.{0,2}\\x7d.*";

Mage.Common/src/mage/utils/CompressUtil.java

@@ -8,7 +8,7 @@
  *
  * @author ayrat
  */
-public class CompressUtil {
+public final class CompressUtil {
 
     /**
      * Defines should data be compressed or not. True by default. Read from

Mage.Common/src/mage/utils/DeckBuilder.java

@@ -21,7 +21,7 @@
  *
  * @author nantuko
  */
-public class DeckBuilder {
+public final class DeckBuilder {
 
     private static final int DECK_COUNT40[] = {3, 6, 6, 4, 3, 2};
     private static final int DECK_COUNT60[] = {4, 9, 9, 5, 5, 3};

Mage.Common/src/mage/utils/ThreadUtils.java

@@ -11,7 +11,7 @@
  * @author ayrat
  */
 @SuppressWarnings("unchecked")
-public class ThreadUtils {
+public final class ThreadUtils {
 
     public static final ThreadPoolExecutor threadPool;
     public static final ThreadPoolExecutor threadPool2;

Mage.Common/src/mage/utils/properties/PropertiesUtil.java

@@ -9,7 +9,7 @@
 /**
  * @author noxx
  */
-public class PropertiesUtil {
+public final class PropertiesUtil {
 
     private static final Logger logger = Logger.getLogger(PropertiesUtil.class);
 

Mage.Common/src/mage/utils/properties/PropertyKeys.java

@@ -3,7 +3,7 @@
 /**
  * @author noxx
  */
-public class PropertyKeys {
+public final class PropertyKeys {
 
     public static final String KEY_DB_LOG_URL = "db.log.url";
     public static final String KEY_DB_FEEDBACK_URL = "db.feedback.url";

Mage.Server.Plugins/Mage.Player.AI.MA/src/mage/player/ai/Config2.java

@@ -40,7 +40,7 @@
  *
  * @author BetaSteward_at_googlemail.com
  */
-public class Config2 {
+public final class Config2 {
 
     private static final Logger logger = Logger.getLogger(Config2.class);
 

Mage.Server.Plugins/Mage.Player.AI.MA/src/mage/player/ai/GameStateEvaluator2.java

@@ -18,7 +18,7 @@
  * this evaluator is only good for two player games
  *
  */
-public class GameStateEvaluator2 {
+public final class GameStateEvaluator2 {
 
     private static final Logger logger = Logger.getLogger(GameStateEvaluator2.class);