Added "CheckForUpdate" configuration option which, when enabled, will check for a new version of the plugin every 24 hours and when one is found, will display a console alert once every hour. Additionally, OPs will see an update alert each time they log in to the server.

src/net/theprogrammersworld/herobrine/ConfigDB.java

@@ -82,7 +82,10 @@ public class ConfigDB {
 	public String HerobrineName = "Herobrine";
 	public String HerobrineWorldName = "world_herobrine_graveyard";
 	public boolean ShowInTabList = false;
+	public boolean CheckForUpdates = true;
 
+	public boolean newVersionFound = false;
+	
 	private boolean isStartupDone = false;
 
 	public ConfigDB(Logger l) {
@@ -240,6 +243,7 @@ public class ConfigDB {
 			config.set("config.HerobrineName", "Herobrine");
 			config.set("config.HerobrineWorldName", "world_herobrine_graveyard");
 			config.set("config.ShowInTabList", false);
+			config.set("config.CheckForUpdates", true);
 
 			try {
 				config.save(configF);
@@ -331,6 +335,7 @@ public class ConfigDB {
 		HerobrineName = config.getString("config.HerobrineName");
 		HerobrineWorldName = config.getString("config.HerobrineWorldName");
 		ShowInTabList = config.getBoolean("config.ShowInTabList");
+		CheckForUpdates = this.config.getBoolean("config.CheckForUpdates");
 		
 		Herobrine.HerobrineMaxHP = HerobrineHP;
 		Herobrine.getPluginCore().getAICore().Stop_MAIN();

src/net/theprogrammersworld/herobrine/Herobrine.java

@@ -42,6 +42,7 @@ import net.theprogrammersworld.herobrine.listeners.EntityListener;
 import net.theprogrammersworld.herobrine.listeners.InventoryListener;
 import net.theprogrammersworld.herobrine.listeners.PlayerListener;
 import net.theprogrammersworld.herobrine.listeners.WorldListener;
+import net.theprogrammersworld.herobrine.misc.UpdateScanner;
 
 public class Herobrine extends JavaPlugin implements Listener {
 
@@ -187,6 +188,10 @@ public class Herobrine extends JavaPlugin implements Listener {
 
 		// Support initialize
 		this.support = new Support();
+		
+		// If the plugin configuration has updated checking turned on, start the thread responsible for performing the check.
+		if(configdb.CheckForUpdates)
+			new Thread(new UpdateScanner()).start();
 	}
 
 	@Override

src/net/theprogrammersworld/herobrine/listeners/PlayerListener.java

@@ -88,6 +88,11 @@ public class PlayerListener implements Listener {
 				}
 			}
 		}, 20L); // 20L = 1 sec
+		
+		// If a newer version of Herobrine is available and the player is an OP, display a message to the OP stating that a new version is available.
+		if(Herobrine.getPluginCore().getConfigDB().newVersionFound && event.getPlayer().isOp())
+			event.getPlayer().sendMessage(ChatColor.RED + "A new version of Herobrine is available. To "
+					+ "get it, go to www.theprogrammersworld.net/Herobrine and click \"Download\".");
 	}
 
 	@EventHandler

src/net/theprogrammersworld/herobrine/misc/UpdateScanner.java

@@ -0,0 +1,55 @@
+package net.theprogrammersworld.herobrine.misc;
+
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+import java.net.URL;
+
+import org.bukkit.Bukkit;
+import org.bukkit.ChatColor;
+import org.bukkit.command.ConsoleCommandSender;
+
+import net.theprogrammersworld.herobrine.Herobrine;
+
+public class UpdateScanner implements Runnable {
+
+	@Override
+	public void run() {
+		// Check for a newer version of the plugin, and put the thread to sleep for 24 hours
+		// before the check is performed again. If a newer version is found, begin reporting
+		// the discovery of a newer version once every hour.
+		final String pluginVersionCount = "25";
+		ConsoleCommandSender console = Bukkit.getServer().getConsoleSender();
+		
+		while(!Herobrine.getPluginCore().getConfigDB().newVersionFound) {
+			// Check for updates once every 24 hours.
+			try {
+				URL versionCheckURL = new URL("https://www.theprogrammersworld.net/Herobrine/latestVersion.html");
+				BufferedReader remoteNumberReader = new BufferedReader(new InputStreamReader(versionCheckURL.openStream()));
+				String remoteVersionNumber = remoteNumberReader.readLine();
+				if(!remoteVersionNumber.equals(pluginVersionCount)) {
+					// A newer version was found. Change the value of "newVersionFound", and break
+					// from this loop in to a loop that will display a "new version" report in the
+					// console once every hour.
+					Herobrine.getPluginCore().getConfigDB().newVersionFound = true;
+					break;
+				}
+			} catch (Exception e) {
+				console.sendMessage(ChatColor.RED + "Herobrine was unable to connect to the internet to check\n" +
+						"for a new version.");
+			}
+			try {
+				Thread.sleep(86400000);
+			} catch (InterruptedException e) {}
+		}
+		
+		while(true) {
+			// Display a "new version" message in the console once every hour.
+			console.sendMessage(ChatColor.RED + "A new version of Herobrine is available.\nTo get it, " +
+					"go to www.theprogrammersworld.net/Herobrine and click \"Download\".");
+			try {
+				Thread.sleep(3600000);
+			} catch (InterruptedException e) {}
+		}
+	}
+
+}