Textbook learning summary
1. URL class: The URL class in the ava.net package is an abstraction of the Uniform Resource Locator. The application that uses the URL to create an object is called a client program. The URL object of the client program can call the InputStream openStream() method to return a Input stream, the input stream points to the resource contained in the URL object, through which the resource information on the server can be read to the client.
2. Sockets
3. Use multithreading technology
4. Java remote call: RMI is a distributed technology. Using RMI, an application on a virtual machine can request to call an object method located on another virtual machine on the network.
code hosting
