What is URL

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?– URL stands for Uniform Resource Locator and it points to resource files on the Internet. URL has four components: http://www. address. com:80/index.html, where http – protocol name, address – IP address or host name, 80 – port number and index.html – file path.

In the context of Core Java, a URL (Uniform Resource Locator) is a reference or address used to access resources on the internet. It specifies the location of a resource and the protocol used to access it. URLs are commonly used in Java to open connections, download data, or interact with web resources.

Here’s a brief breakdown of a typical URL:

bash
protocol://host:port/path?query#fragment
  • protocol: Specifies the protocol used to access the resource (e.g., “http” or “https”).
  • host: Specifies the domain name or IP address of the server.
  • port: Specifies the port number on the server (optional, and defaults to 80 for “http” and 443 for “https”).
  • path: Specifies the path to the resource on the server.
  • query: Specifies parameters for the resource (optional).
  • fragment: Specifies a specific section within the resource (optional).

In Java, the java.net.URL class is commonly used to work with URLs, providing methods to retrieve various components of a URL and to open connections to the resource it represents.