snmpAdaptor4j is an adaptor for Java Management eXtensions (JMX) providing a simple access to MBeans via the SNMP protocol. Thus, this adapter you allow to connect most monitoring tools (like Nagios and Cacti) to your Java applications.
For each MBean, an XML mapping file allows to establish the relationships between attributes and the MIB of the SNMP adapter. No additional code is necessary to integrate the MBeans in the SNMP protocol.
This adapter can work in a multi-applications...
Simmon is SIMple MONitor of network. Dedicated daemon running on router collects traffic data, which is read by gui client. Daemon is fast and light C code build on top of libpcap, and client written in Java Swing can be run on any Java capable platform