junixsocket is a Java/JNI library that allows the use of Unix Domain Sockets (AF_UNIX sockets) and other socket types, such as AF_TIPC and AF_VSOCK, from Java, using the standard Socket API

The core system dependency; the one you want to add to your project

RMI over Unix sockets

A server-environment supporting Unix sockets

Unix Domain Sockets and Named Pipes for the JVM on Linux, macOS, and Windows

Access MySQL databases over Unix sockets