I see these threads UNIX socket implementation for Java? and http://forums.sun.com/thread.jspa?threadID=713266.
The second link says that Java already supports UNIX Domain Socket. If that's true what class do I need to implement from Java?.
From the first link, it says that Java does not support UNIX Domain Socket. If you need UNIX Domain Socket you must use a 3rd-party library.
So, which is it?
You could use junixsocket: https://github.com/kohlschutter/junixsocket
It provides AF-UNIX support via a JNI library, utilizing the Java Socket API. It even allows connecting to MySQL from Java (Connector/J) via Unix sockets.
netstat -ux. See also Difference between UNIX domain STREAM and DATAGRAM sockets.
netstat is often unavailable, whereas the iproute2 package and its ss tool has replaced it. Use ss -lx to see processes listening to UNIX domain sockets in this case.
Java cannot create or access Unix Domain Sockets without using a 3rd party (native) library. The last comment on the second link above mentions this.
The first link has some good (and correct) information on it.
Netty also supports it since version 4.0.26: https://github.com/netty/netty/pull/3344
netstat -ux. See also Difference between UNIX domain STREAM and DATAGRAM sockets.
epoll(2) for Unix domain socket, this means it can't be used without Linux.As noted by @Benny in a comment, JDK 16 comes with built-in support for unix domain sockets via java.net.UnixDomainSocketAdress and related classes. You can read more at JEP-380
Here's a snippit from the JEP:
var unixAddr = UnixDomainSocketAddress.of("/foo/bar.socket");
var channel2 = SocketChannel.open(unixAddr);
