How do I create a ClassLoader that will not search the parent for loading classes

Question

I think I understand how class-loading hierarchies work. (the JVM looks into the parent hierarchy first)

So I would like to create a ClassLoader, or use an existing

Answer 1

Simply use the URLClassLoader and supply null as the parent.

File myDir = new File("/some/directory/");
ClassLoader loader = null;
try {
    URL url = myDir.toURL();         
    URL[] urls = new URL[]{url};
    loader = new URLClassLoader(urls, null);
} 
catch (MalformedURLException e) 
{
    // oops
}