Best answer: How does socket programming work in Java?

How do I connect a socket in Java?

java. Create and open a server socket. ServerSocket serverSocket = new ServerSocket(portNumber);

Creating a Server Program

  1. Create and open a server socket.
  2. Wait for the client request.
  3. Open an input stream and an output stream to the client.
  4. Communicate with the client.
  5. Close the streams and then close the socket.

What do you understand by TCP IP socket programming in Java?

Java Socket programming is used for communication between the applications running on different JRE. Java Socket programming can be connection-oriented or connection-less.

Is Java socket TCP or UDP?

Yes, Socket and ServerSocket use TCP/IP. The package overview for the package is explicit about this, but it’s easy to overlook. UDP is handled by the DatagramSocket class.

What are the advantages of socket programming?


  • Provides flexible access to files and data over a network.
  • Sharing resources.
  • Security.
  • Speed.
  • Centralized software management.
  • Provide security like sending sensitive (password protected) files and programs on a network.

What is the purpose of socket connect () method?


Connect(EndPoint) Establishes a connection to a remote host.
Connect(IPAddress[], Int32) Establishes a connection to a remote host. The host is specified by an array of IP addresses and a port number.
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What is the function of connect () in Java?

The connect() method of Java Socket class connects the specified socket to the server.

What is URL in Java?

The Java URL class represents an URL. URL is an acronym for Uniform Resource Locator. It points to a resource on the World Wide Web. … A URL contains many information: Protocol: In this case, http is the protocol.

Is UDP an IP?

User Datagram Protocol (UDP) – a communications protocol that facilitates the exchange of messages between computing devices in a network. It’s an alternative to the transmission control protocol (TCP). In a network that uses the Internet Protocol (IP), it is sometimes referred to as UDP/IP.

Is Java socket TCP?

There are two communication protocols that one can use for socket programming: User Datagram Protocol (UDP) and Transfer Control Protocol (TCP).

What is port number in Java?

The port number is used to uniquely identify different applications. It acts as a communication endpoint between applications. The port number is associated with the IP address for communication between two applications.

What is difference between TCP and UDP?

TCP is a connection-oriented protocol, whereas UDP is a connectionless protocol. A key difference between TCP and UDP is speed, as TCP is comparatively slower than UDP. Overall, UDP is a much faster, simpler, and efficient protocol, however, retransmission of lost data packets is only possible with TCP.