Load all jars from directory dynamically using URLClassLoader to Driver

Question

I have created a plugin application and need to pass multiple dependency Jars from a folder dynamically at runtime for JDBC connection.

When using single jar, works fine.,

try {       
    URL u = new URL("jar:file:"/path/to/file.jar"!/");
    URLClassLoader ucl = new URLClassLoader(new URL[] { u });

    Driver d;
    try {
            d = (Driver)Class.forName("com.example.xxx.Driver", true, ucl).newInstance();
        } catch (ClassNotFoundException e) {
            logger.log(Level.ERROR, e.getMessage(), e);
        }
    DriverManager.registerDriver(new DriverDelegator(d));
} catch (Exception e) {
    throw new AdapterException(e);
} 

But in my case, How to load all classes of all jars in a directory and use for the "JDBC connection" driver with this method :

d = (Driver)Class.forName("com.example.xxx.Driver", true, ucl).newInstance();

How to implement it using URLClassLoader && Class.forName() ??

Thanks in advance,

~ Praz Solver