import snmp.*;import java.net.*;public class SNMPMultithreadTest					implements Runnable{    SNMPv1CommunicationInterface comInterface;        public class RetrieveThread extends Thread    {        public int i;                public RetrieveThread(Runnable r, int i)        {            super(r);            this.i = i;        }            }            public static void main(String args[])     {        SNMPMultithreadTest app = new SNMPMultithreadTest();    }            public SNMPMultithreadTest()     {        try        {            // create a communications interface to a remote SNMP-capable device;            // need to provide the remote host's InetAddress and the community            // name for the device; in addition, need to  supply the version number            // for the SNMP messages to be sent (the value 0 corresponding to SNMP            // version 1)            InetAddress hostAddress = InetAddress.getByName("10.0.1.1");            String community = "public";            int version = 0;    // SNMPv1                        comInterface = new SNMPv1CommunicationInterface(version, hostAddress, community);                        comInterface.setSocketTimeout(500);                        for (int i = 0; i < 1000; i++)            {                RetrieveThread retrievalThread = new RetrieveThread(this, i);                retrievalThread.start();            }                                }        catch(Exception e)        {            System.out.println("Exception during SNMP operation:  " + e + "\n");        }            }            public void run()    {        int threadIndex = ((RetrieveThread)Thread.currentThread()).i;                while (true)        {            try	        {		            // now send an SNMP GET request to retrieve the value of the SNMP variable	            // corresponding to OID 1.3.6.1.2.1.2.1.0; this is the OID corresponding to	            // the device identifying string, and the type is thus SNMPOctetString	            String itemID = "1.3.6.1.2.1.1.1.0";	            	            System.out.println("Thread " + threadIndex + ": Retrieving value corresponding to OID " + itemID);	            	            // the getMIBEntry method of the communications interface returns an SNMPVarBindList	            // object; this is essentially a Vector of SNMP (OID,value) pairs. In this case, the	            // returned Vector has just one pair inside it.	            SNMPVarBindList newVars = comInterface.getMIBEntry(itemID);	            	            // extract the (OID,value) pair from the SNMPVarBindList; the pair is just a two-element	            // SNMPSequence	            SNMPSequence pair = (SNMPSequence)(newVars.getSNMPObjectAt(0));	            	            // extract the object identifier from the pair; it's the first element in the sequence	            SNMPObjectIdentifier snmpOID = (SNMPObjectIdentifier)pair.getSNMPObjectAt(0);	            	            // extract the corresponding value from the pair; it's the second element in the sequence	            SNMPObject snmpValue = pair.getSNMPObjectAt(1);	            	            // print out the String representation of the retrieved value	            System.out.println("Thread " + threadIndex + ": Retrieved value: type " + snmpValue.getClass().getName() + ", value " + snmpValue.toString());	            	                	        }	        catch(Exception e)	        {	            System.out.println("Exception during SNMP operation:  " + e + "\n");	        }	                }            }}