ClassPathHacker.java

import java.lang.reflect.*;
import java.io.*;
import java.net.*;

public class ClassPathHacker {

private static final Class[] parameters = new Class[]{URL.class};

public static void addFile(String s) throws IOException {
	File f = new File(s);
	addFile(f);
}//end method

public static void addFile(File f) throws IOException {
	addURL(f.toURL());
}//end method


public static void addURL(URL u) throws IOException {

	URLClassLoader sysloader = (URLClassLoader)ClassLoader.getSystemClassLoader();
	Class sysclass = URLClassLoader.class;

	try {
		Method method = sysclass.getDeclaredMethod("addURL",parameters);
		method.setAccessible(true);
		method.invoke(sysloader,new Object[]{ u });
	} catch (Throwable t) {
		t.printStackTrace();
		throw new IOException("Error, could not add URL to system classloader");
	}//end try catch

}//end method

}//end class