Added lots of 'final' modifiers to class fields where applicable.

Signed-off-by: Jeffrey Han <itdelatrisu@gmail.com>

src/itdelatrisu/opsu/states/ButtonMenu.java

@@ -256,7 +256,7 @@ public class ButtonMenu extends BasicGameState {
 		};
 
 		/** The buttons in the state. */
-		private Button[] buttons;
+		private final Button[] buttons;
 
 		/** The associated MenuButton objects. */
 		private MenuButton[] menuButtons;
@@ -548,10 +548,10 @@ public class ButtonMenu extends BasicGameState {
 		};
 
 		/** The text to show on the button. */
-		private String text;
+		private final String text;
 
 		/** The button color. */
-		private Color color;
+		private final Color color;
 
 		/**
 		 * Constructor.
@@ -594,7 +594,7 @@ public class ButtonMenu extends BasicGameState {
 	private GameContainer container;
 	private StateBasedGame game;
 	private Input input;
-	private int state;
+	private final int state;
 
 	public ButtonMenu(int state) {
 		this.state = state;

src/itdelatrisu/opsu/states/DownloadsMenu.java

@@ -162,10 +162,10 @@ public class DownloadsMenu extends BasicGameState {
 	/** Search query helper class. */
 	private class SearchQuery implements Runnable {
 		/** The search query. */
-		private String query;
+		private final String query;
 
 		/** The download server. */
-		private DownloadServer server;
+		private final DownloadServer server;
 
 		/** Whether the query was interrupted. */
 		private boolean interrupted = false;
@@ -246,7 +246,7 @@ public class DownloadsMenu extends BasicGameState {
 	private GameContainer container;
 	private StateBasedGame game;
 	private Input input;
-	private int state;
+	private final int state;
 
 	public DownloadsMenu(int state) {
 		this.state = state;

src/itdelatrisu/opsu/states/Game.java

@@ -240,7 +240,7 @@ public class Game extends BasicGameState {
 	private GameContainer container;
 	private StateBasedGame game;
 	private Input input;
-	private int state;
+	private final int state;
 
 	public Game(int state) {
 		this.state = state;

src/itdelatrisu/opsu/states/GamePauseMenu.java

@@ -62,7 +62,7 @@ public class GamePauseMenu extends BasicGameState {
 	private GameContainer container;
 	private StateBasedGame game;
 	private Input input;
-	private int state;
+	private final int state;
 	private Game gameState;
 
 	public GamePauseMenu(int state) {

src/itdelatrisu/opsu/states/GameRanking.java

@@ -68,7 +68,7 @@ public class GameRanking extends BasicGameState {
 	// game-related variables
 	private GameContainer container;
 	private StateBasedGame game;
-	private int state;
+	private final int state;
 	private Input input;
 
 	public GameRanking(int state) {

src/itdelatrisu/opsu/states/MainMenu.java

@@ -122,7 +122,7 @@ public class MainMenu extends BasicGameState {
 	private GameContainer container;
 	private StateBasedGame game;
 	private Input input;
-	private int state;
+	private final int state;
 
 	public MainMenu(int state) {
 		this.state = state;

src/itdelatrisu/opsu/states/OptionsMenu.java

@@ -114,10 +114,10 @@ public class OptionsMenu extends BasicGameState {
 		private static OptionTab[] values = values();
 
 		/** Tab name. */
-		private String name;
+		private final String name;
 
 		/** Options array. */
-		public GameOption[] options;
+		public final GameOption[] options;
 
 		/** Associated tab button. */
 		public MenuButton button;
@@ -167,7 +167,7 @@ public class OptionsMenu extends BasicGameState {
 	private StateBasedGame game;
 	private Input input;
 	private Graphics g;
-	private int state;
+	private final int state;
 
 	public OptionsMenu(int state) {
 		this.state = state;

src/itdelatrisu/opsu/states/SongMenu.java

@@ -209,7 +209,7 @@ public class SongMenu extends BasicGameState {
 	private GameContainer container;
 	private StateBasedGame game;
 	private Input input;
-	private int state;
+	private final int state;
 
 	public SongMenu(int state) {
 		this.state = state;

src/itdelatrisu/opsu/states/Splash.java

@@ -67,7 +67,7 @@ public class Splash extends BasicGameState {
 	private AnimatedValue logoAlpha;
 
 	// game-related variables
-	private int state;
+	private final int state;
 	private GameContainer container;
 	private boolean init = false;