Java Long class

Java Socket getChannel() method

Last Updated : 17 Mar 2025

The getChannel() method of Java Socket class returns the unique SocketChannel object linked with this socket.

Syntax

Parameter

Return

The getChannel() method either returns the socket channel linked with this socket or returns null if the socket was not created for the specified channel.

Example 1

import java.io.IOException;
import java.net.*;
public class JavaSocketGetChannelExample1 {
    public static void main(String[] args) throws IOException {
      Socket socket = new Socket();
      InetAddress inetAddress=InetAddress.getByName(null);
      //the port should be greater or equal to 0, else it will throw an error
        //passing negative port number
        int port=1085;
        //calling the constructor of the SocketAddress class
        SocketAddress socketAddress=new InetSocketAddress(inetAddress, port);
        //binding the  socket with the inetAddress and port number
        socket.bind(socketAddress);
        int timeout=10000;
        //connect() method connects this socket to the server with the given timeout value.
        socket.connect(socketAddress,timeout);
        //getChannel() method returns the channel connected with this socket
        System.out.println("Channel: "+socket.getChannel());
        System.out.println("Inet address: "+socket.getInetAddress());
        System.out.println("Port number: "+socket.getLocalPort());
    }
}

Output:

Channel: null
Inet address: localhost/127.0.0.1
Port number: 1085

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Java Socket getChannel() method

Syntax

Parameter

Return