). The location of a user’s home directory is determined using the system property user.home, which may not be automatically set on all platforms.

Instances of this class cannot be created directly, use one of the subclasses instead.

Get the default node.

The results of this function are memoized as the intent is to obtain a singleton instance of the default node. (The Erlang JInterface docs recommend that only one node be run per JVM instance.)

This class represents local node types. It is used to group the node types OtpNode and OtpSelf.

Constructor for OtpNode.

If one arg is passed, it must be of type String, representing the node name.

If two args are passed, the first must be of type String and the second must be either an OtpTransportFactory or a String representing the Erlang cookie.

If three args are passed, they must be:

• node name (String)
• Erlang cookie (String)
• port number (Integer) or an OtpTransportFactory

If four args are passed, they must be:

• node name (String)
• Erlang cookie (String)
• port number (Integer)
• an OtpTransportFactory

Represents a local OTP node. This class is used when you do not wish to manage connections yourself - outgoing connections are established as needed, and incoming connections accepted automatically. This class supports the use of a mailbox API for communication, while management of the underlying communication mechanism is automatic and hidden from the application programmer.

Once an instance of this class has been created, obtain one or more mailboxes in order to send or receive messages. The first message sent to a given node will cause a connection to be set up to that node. Any messages received will be delivered to the appropriate mailboxes.

To shut down the node, call (close). This will prevent the node from accepting additional connections and it will cause all existing connections to be closed. Any unread messages in existing mailboxes can still be read, however no new messages will be delivered to the mailboxes.

Note that the use of this class requires that EPMD (Erlang Port Mapper Daemon) is running on each cooperating host. This class does not start EPMD automatically as Erlang does, you must start it manually or through some other means. See the Erlang documentation for more information about this.

Constructor for OtpPeer.

Represents a remote OTP node. It acts only as a container for the nodename and other node-specific information that is needed by the OtpConnection class.

If one arg is passed, it must be of type String, representing the node name.

If two args are passed, the first must be of type String and the second must be an OtpTransportFactory.

Constructor for OtpSelf.

If one arg is passed, it must be of type String, representing the node name.

If two args are passed, the first must be of type String and the second must be either an OtpTransportFactory or a String representing the Erlang cookie.

If three args are passed, they must be:

• node name (String)
• Erlang cookie (String)
• port number (Integer) or an OtpTransportFactory

If four args are passed, they must be:

• node name (String)
• Erlang cookie (String)
• port number (Integer)
• an OtpTransportFactory

Represents an OTP node. It is used to connect to remote nodes or accept incoming connections from remote nodes.

When the Java node will be connecting to a remote Erlang, Java or C node, it must first identify itself as a node by creating an instance of this class, after which it may connect to the remote node.

When you create an instance of this class, it will bind a socket to a port so that incoming connections can be accepted. However the port number will not be made available to other nodes wishing to connect until you explicitely register with the port mapper daemon by calling publishPort().