Here's my little test: import java.net.URL; | import java.net.URLConnection; | import java.net.URLStreamHandlerFactory; | import java.net.URLStreamHandler; | import java.io.IOException; | | public final class Main { | | public static void main(String[] args) throws IOException { | final URL urlOne = new URL("http", "www.google.com", "/"); | final URLConnection conn = urlOne.openConnection(); | final Class<? extends URLConnection> origClass = conn.getClass(); | URL.setURLStreamHandlerFactory(new URLStreamHandlerFactory() { | public URLStreamHandler createURLStreamHandler(final String protocol) { | if (protocol.equals("http")) { | return new URLStreamHandler() { | @Override | protected URLConnection openConnection(final URL u) throws IOException { | return new URLConnection(u) { | @Override | public void connect() throws IOException { | } | }; | } | }; | } else { | return null; | } | } | }); | final URL urlTwo = new URL("http", "www.google.com", "/"); | final URLConnection conn2 = urlTwo.openConnection(); | final Class<? extends URLConnection> newClass = conn2.getClass(); | System.out.println("First: " + origClass.getName() + ", second: " + newClass.getName()); | } | } The expected result is that the two classes printed are different, which demonstrates that the cache does not survive the setURLStreamHandlerFactory call. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4188601#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...