je n'arrive pas à retourné le résultat de la requete de snmp

j'ai résolu le probléme
Code:
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package Pack;
 
import org.snmp4j.CommunityTarget; 
import org.snmp4j.PDU; 
import org.snmp4j.Snmp; 
import org.snmp4j.TransportMapping; 
import org.snmp4j.event.ResponseEvent; 
import org.snmp4j.event.ResponseListener; 
import org.snmp4j.mp.SnmpConstants; 
import org.snmp4j.smi.*; 
import org.snmp4j.transport.DefaultUdpTransportMapping; 
 
public class snmp2
{
  public static final String READ_COMMUNITY = "public";
  public static final String WRITE_COMMUNITY= "private";
  //public static final int mSNMPVersion =0; // 0 represents SNMP version=1
 
  //public static final String OID_UPS_OUTLET_GROUP1 = "1.3.6.1.4.1.318.1.1.1.12.3.2.1.3.1";
  //public static final String OID_UPS_BATTERY_CAPACITY= "1.3.6.1.4.1.318.1.1.1.2.2.1.0";
 
  public static final String OID_UPS_OUTLET_GROUP1 = "1.3.6.1.2.1.1.5.0";
  public static final String OID_UPS_BATTERY_CAPACITY = "1.3.6.1.2.1.1.5.0";
 
  private String msg="";
 
  public snmp2()
  {
    try
     {
         String strIPAddress = "127.0.0.1";
         String val1="EXPLORATION";
         String val2="Exp";
 
         //snmpSet(strIPAddress, WRITE_COMMUNITY,OID_UPS_OUTLET_GROUP1, val1);
 
         msg =snmpGet(strIPAddress,READ_COMMUNITY,OID_UPS_BATTERY_CAPACITY);
      }
     catch (Exception e)
     {
           e.printStackTrace();
     }
  }
 private int SNMP_PORT=161;
 
 public void snmpSet(String strAddress, String community, String strOID, String Value)
  {
    strAddress= strAddress+"/"+SNMP_PORT;
    Address targetAddress = GenericAddress.parse(strAddress);
    Snmp snmp;
    try
    {
     TransportMapping transport = new DefaultUdpTransportMapping();
     snmp = new Snmp(transport);
     transport.listen();
     CommunityTarget target = new CommunityTarget();
     target.setCommunity(new OctetString(community));
     target.setAddress(targetAddress);
     target.setRetries(2);
     target.setTimeout(5000);
     target.setVersion(SnmpConstants.version1);
 
     PDU pdu = new PDU();
     //pdu.add(new VariableBinding(new OID(strOID), new Integer32(Value)));
     pdu.add(new VariableBinding(new OID(strOID), new OctetString(Value)));
 
     pdu.setType(PDU.SET);
 
     ResponseListener listener = new ResponseListener()
      {
        public void onResponse(ResponseEvent event)
         {
           ((Snmp)event.getSource()).cancel(event.getRequest(), this);
           msg="Set Status is:"+event.getResponse().getErrorStatusText();
           //System.out.println(msg);
         }
      };
     snmp.send(pdu, target, null, listener);
     snmp.close();
   }
   catch (Exception e)
   {
       e.printStackTrace();
   }
 }
 
  public String snmpGet(String strAddress, String communit, String strOID)
   {
    String str="";
    try
    {
      OctetString community = new OctetString(communit);
      strAddress= strAddress+"/"+SNMP_PORT;
      Address targetaddress = new UdpAddress(strAddress);
      TransportMapping transport = new DefaultUdpTransportMapping();
      transport.listen();
 
      CommunityTarget comtarget = new CommunityTarget();
      comtarget.setCommunity(community);
      comtarget.setVersion(SnmpConstants.version1);
      comtarget.setAddress(targetaddress);
      comtarget.setRetries(2);
      comtarget.setTimeout(5000);
 
      PDU pdu = new PDU();
      ResponseEvent response;
      Snmp snmp;
      pdu.add(new VariableBinding(new OID(strOID)));
      pdu.setType(PDU.GET);
      snmp = new Snmp(transport);
      response = snmp.get(pdu,comtarget);
      if(response != null)
        {
           if(response.getResponse().getErrorStatusText().equalsIgnoreCase("Success"))
            {
              PDU pduresponse=response.getResponse();
              str=pduresponse.getVariableBindings().firstElement().toString();
              if(str.contains("="))
               {
                 int len = str.indexOf("=");
                 str=str.substring(len+1, str.length());
               }
            }
        }
      else
       {
          msg="Feeling like a TimeOut occured";
          //System.out.println(msg);
       }
     snmp.close();
    }
    catch(Exception e)
    {
        e.printStackTrace();
    }
     //System.out.println("Response="+str);
     return str;
   }
 
  public String Aff()
  {
      return msg;
  }
}