Soon to be used JarLoader.

src/com/massivecraft/factions/util/JarLoader.java

@@ -0,0 +1,59 @@
+package com.massivecraft.factions.util;
+
+import java.io.File;
+import java.lang.reflect.Method;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.net.URLClassLoader;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+public class JarLoader {
+	
+	private static URLClassLoader sysloader = (URLClassLoader)ClassLoader.getSystemClassLoader();
+	
+	public static boolean load(String filename) {
+		return load(new File(filename));
+	}
+	
+	public static boolean load(File file) {
+		if ( ! file.exists()) {
+			log("This file does not exist: " + file);
+			return false;
+		}
+		
+		try {
+			return load(file.toURI().toURL());
+		} catch (MalformedURLException e) {
+			log("The url for \""+file+"\" was malformed." + e);
+			return false;
+		}
+	}
+	
+	public static boolean load(URL url) {
+		// If the file already is loaded we can skip it
+        for (URL otherUrl : sysloader.getURLs()) {
+        	if (otherUrl.sameFile(url)) {
+                return true;
+            }
+        }
+        
+        try {
+        	Method addURLMethod = URLClassLoader.class.getDeclaredMethod("addURL", new Class[]{ URL.class });
+        	addURLMethod.setAccessible(true);
+			addURLMethod.invoke(sysloader, new Object[]{ url });
+			return true;
+		} catch (Exception e) {
+			log("Failed to load \""+url+"\":" + e);
+			return false;
+		}
+	}
+	
+	// -------------------------------------------- //
+	// Logger
+	// -------------------------------------------- //
+	private static void log(Object o) {
+		Logger.getLogger("Minecraft").log(Level.SEVERE, "[JAR-LOADER] " + o);
+	}
+	
+}