Range of Ports Available to ServerSockets

The java.net.ServerSocket class implements a server socket. A server socket waits for requests to come in over the network. It performs some operation based on that request, and then possibly returns a result to the requester.

The constructors of java.net.ServerSocket have an int parameter for the port number the socket is supposed to listen to, as in

 "public ServerSocket(int port) throws IOException" 

ServerSockets can be created to listen on port numbers from 1 to 65535. However, port numbers 1 up to, and including 255 are reserved for services such as telnet (23), ftp (21), http (80), and so on. On UNIX platform, port numbers less than 1024 require root access.

Also, setting the port number of a ServerSocket to zero will let the server to choose an unused port on random.

Share the Post:
Share on facebook
Share on twitter
Share on linkedin


The Latest

iOS app development

The Future of iOS App Development: Trends to Watch

When it launched in 2008, the Apple App Store only had 500 apps available. By the first quarter of 2022, the store had about 2.18 million iOS-exclusive apps. Average monthly app releases for the platform reached 34,000 in the first half of 2022, indicating rapid growth in iOS app development.

microsoft careers

Top Careers at Microsoft

Microsoft has gained its position as one of the top companies in the world, and Microsoft careers are flourishing. This multinational company is efficiently developing popular software and computers with other consumer electronics. It is a dream come true for so many people to acquire a high paid, high-prestige job

your company's audio

4 Areas of Your Company Where Your Audio Really Matters

Your company probably relies on audio more than you realize. Whether you’re creating a spoken text message to a colleague or giving a speech, you want your audio to shine. Otherwise, you could cause avoidable friction points and potentially hurt your brand reputation. For example, let’s say you create a