URL.setURLStreamHandlerFactory(new MyURLStreamHandlerFactory());
public class MyURLStreamHandlerFactory implements URLStreamHandlerFactory { public URLStreamHandler createURLStreamHandler(String protocol) { if ("http".equals(protocol) || "https".equals(protocol)) { return new MyURLStreamHandler(); } return null; } }In this example, we are defining a custom `MyURLStreamHandlerFactory` class that implements the `URLStreamHandlerFactory` interface. We are overriding the `createURLStreamHandler` method to return a new `MyURLStreamHandler` instance whenever the protocol is either "http" or "https". If the protocol is anything else, we return null, indicating that the factory doesn't know how to handle that protocol. The `java.net` package library contains classes and interfaces for networking in Java, such as URL, URLConnection, and Socket.