This article mainly introduces how to use the URLConnection object provided in JDK to realize the image download function.
Table of contents
1. Image download
The URL and URLConnection classes provided in JDK are used in network programming. The URL class is an abstraction of the URL address, which represents a uniform resource locator object. URLConnection is a resource link object used to establish requests with network resources. Link relationship, using two classes of URL and URLConnection can realize the access and download function of network resources. Among them, the URLConnection class has a commonly used subclass called HttpURLConnection. This article needs to introduce how to realize the image download function.