20165336 2016-2017-2 "Java Programming" 9th Week study Summary

20165336 2016-2017-2 "Java program Design" 9th Week Study summary Textbook study summary

1. URL class: The URL class is an important class in the java.net package, and the application that uses the URL to create the object is called the client program.
2, a URL object usually contains the most basic three parts of information: protocol, address, resources.
3, Uel construction method:public URL(String spec) throws MalformedURLException。
4. Read the resources in the URL: URL object invocation InputStream openStream() .
5, Inetadress class: Address of the expression: domain name, IP address
6. Get the address of the host on the Internet:

• You can use the static method of the InetAddress classgetByName(String s);
• Gets a InetAddress object that contains the domain name and IP address of the host address that the object
• The information it contains is expressed in the following format:
  www.sina.com.cn/202.108.37.40

7. Get the address of the local machine
You can use the static method of the InetAddress class Getlocalhost () to obtain a InetAddress object that contains the domain name and IP address of the local machine.
8. Socket:

• Client sockets
• ServerSocket object vs. Server-side sockets:

9, the use of multithreading technology: in order to prevent the blocking of threads, the server receives a client socket, it should start a dedicated service for the customer thread.
10. UDP Packets: Sending packets, receiving packets
11. Broadcast Data Report
12, Java Remote Call: Remote Object agent, RMI design details

Problems in code debugging and the resolution process

Issue 1: You must select Code to adjust code specification and refactoring when using idea, or you cannot debug.

Code Hosting

(run result of statistics.sh script)

20165336 2016-2017-2 "Java Programming" 9th Week study Summary