In Java, a URL (Uniform Resource Locator) is an object that represents a resource on the internet. It’s a way to identify and locate a resource, such as a web page, image, or file, on the internet. In Java, the java.net.URL class represents a URL. A URL object contains several components: Protocol (e.g., HTTP, HTTPS, FTP) Hostname (e.g., www.example.com) Port number (e.g., 80 for HTTP) Path (e.g., /path/to/resource) Query string (e.g., ?key=value&foo=bar) Fragment (e.g., #anchorfastners The URL class provides various methods to manipulate and extract information from the URL, such as: getProtocol(): returns the protocol part of the URL getHost(): returns the hostname part of the URL getPort(): returns the port number part of the URL getPath(): returns the path part of the URL getQuery(): returns the query string part of the URL getFragment(): returns the fragment part of the URL You can also use other classes in Java, such as URI and URLEncoder, to work with URLs. URLConnections Class Methods The openConnection() method returns a java.net.URLConnection, an abstract class whose subclasses represent various URL connections. For example − If you connect to a URL with HTTP protocol, the openConnection() method returns an HttpURLConnection object. If you connect to a URL representing a JAR file, the openConnection() method returns a JarURLConnection object, etc.