You can use
Connection connection = new XMPPConnection("192.168.0.101");
connection.connect();
or if you want to specify the port
ConnectionConfiguration config = new ConnectionConfiguration("192.168.0.101", 5222);
Connection connection = new XMPPConnection(config);
connection.connect();
or similar, defaulting to port 5222
ConnectionConfiguration config = new ConnectionConfiguration("192.168.0.101");
Connection connection = new XMPPConnection(config);
connection.connect();