CODE running in MAIN but not in a model class called by servlet

Question

Here is my simple code to connect Weblogic server 10.3.3 using iiop protocol to use the MBeanServer. It is running perfectly when it is run as a simple java application in main() but when I try to call this code from a servlet placing it in a simple method to get an arraylist it is throwing Exception.
* I have an Admin Server and a Managed server in 10.0.32.145
* and another Managed Server on 10.0.32.146. I need to monitor these servers in a portal.
* I have a jsp which refreshes in every 10 seconds and invoke a servlet,that calls this
* method to populate data in three beans(AdminServerBean,ManSer1Bean,ManSer2Bean),add these
* beans into arraylist and return to the servlet.The servlet adds these attributes to the
* request scope and send back to jsp.
import javax.management.MBeanServerConnection;
import javax.management.ObjectName;
import javax.management.remote.JMXConnector;
import javax.management.remote.JMXServiceURL;
import javax.management.remote.JMXConnectorFactory;
import com.beans.*; //My Beans package
import java.util.ArrayList;
import java.util.Hashtable;
public class JMXCore {
     @SuppressWarnings("unchecked")
     public ArrayList<Object> connect2FetchData() throws Exception {
     ArrayList<Object> arr = new ArrayList<Object>();
JMXConnector jmxCon1 = null;
JMXConnector jmxCon2 = null;
JMXConnector jmxCon3 = null;
ObjectName on1 = new ObjectName("com.bea:ServerRuntime=AdminServer,Name=AdminServer,Type=JVMRuntime"); // Admin Server
ObjectName on2 = new ObjectName("com.bea:ServerRuntime=ManSer1,Name=ManSer1,Type=JVMRuntime"); // Managed Server 1
ObjectName on3 = new ObjectName("com.bea:ServerRuntime=ManSer2,Name=ManSer2,Type=JVMRuntime"); // Managed Server 2
try {
JMXServiceURL serviceUr1 = new JMXServiceURL("service:jmx:iiop://10.0.32.145:7001/jndi/weblogic.management.mbeanservers.runtime");
JMXServiceURL serviceUr2 = new JMXServiceURL("service:jmx:iiop://10.0.32.145:9001/jndi/weblogic.management.mbeanservers.runtime");
JMXServiceURL serviceUr3 = new JMXServiceURL("service:jmx:iiop://10.0.32.146:9001/jndi/weblogic.management.mbeanservers.runtime");
System.out.println("Connecting to: " + serviceUr1);
System.out.println("Connecting to: " + serviceUr2);
System.out.println("Connecting to: " + serviceUr3);
Hashtable env = new Hashtable();
env.put(JMXConnectorFactory.PROTOCOL_PROVIDER_PACKAGES,"weblogic.management.remote");
env.put(javax.naming.Context.SECURITY_PRINCIPAL, "contact");
env.put(javax.naming.Context.SECURITY_CREDENTIALS, "contact158");
jmxCon1 = JMXConnectorFactory.newJMXConnector(serviceUr1, env);
jmxCon2 = JMXConnectorFactory.newJMXConnector(serviceUr2, env);
jmxCon3 = JMXConnectorFactory.newJMXConnector(serviceUr3, env);
jmxCon1.connect();
System.out.println("Hello");
MBeanServerConnection con1 = jmxCon1.getMBeanServerConnection(); // MBean Server Connection No 1
System.out.println("CONNECTION TO WEBLOGIC 10.3 ESTABLISHED VIA jmxCon1");
Integer jvm_AdminServ = (Integer)con1.getAttribute(on1,"HeapFreePercent");
String status_AdminServ = null;
if(jvm_AdminServ<10){status_AdminServ = "red";} else {status_AdminServ = "lime";}
AdminServerBean asb = new AdminServerBean(String.valueOf(con1.getAttribute(on1,"Uptime")),String.valueOf(jvm_AdminServ),(String)con1.getAttribute(on1,"JavaVersion"),(String)con1.getAttribute(on1,"OSVersion"),String.valueOf(con1.getAttribute(on1,"HeapFreeCurrent")),String.valueOf(con1.getAttribute(on1,"HeapSizeMax")),String.valueOf(con1.getAttribute(on1,"HeapSizeCurrent")),(String)con1.getAttribute(on1,"OSName"),status_AdminServ);
arr.add(asb);
jmxCon2.connect();
MBeanServerConnection con2 = jmxCon2.getMBeanServerConnection(); // MBean Server Connection No 2
System.out.println("CONNECTION TO WEBLOGIC 10.3 ESTABLISHED VIA jmxCon2");
Integer jvm_ManServ1 = (Integer)con2.getAttribute(on2,"HeapFreePercent");
String status_ManServ1 = null;
if(jvm_ManServ1<10){status_ManServ1 = "red";} else {status_ManServ1 = "lime";}
ManSer1Bean msb1 = new ManSer1Bean(String.valueOf(con2.getAttribute(on2,"Uptime")),String.valueOf(jvm_ManServ1),(String)con2.getAttribute(on2,"JavaVersion"),(String)con2.getAttribute(on2,"OSVersion"),String.valueOf(con2.getAttribute(on2,"HeapFreeCurrent")),String.valueOf(con2.getAttribute(on2,"HeapSizeMax")),String.valueOf(con2.getAttribute(on2,"HeapSizeCurrent")),(String)con2.getAttribute(on2,"OSName"),status_ManServ1);
System.out.println("Manserver1 Heap Free : "+String.valueOf(jvm_ManServ1));
arr.add(msb1);
jmxCon3.connect();
MBeanServerConnection con3 = jmxCon3.getMBeanServerConnection(); // MBean Server Connection No 3
System.out.println("CONNECTION TO WEBLOGIC 10.3 ESTABLISHED VIA jmxCon3");
Integer jvm_ManServ2 = (Integer)con3.getAttribute(on3,"HeapFreePercent");
String status_ManServ2 = null;
if(jvm_ManServ2<10){status_ManServ2 = "red";} else {status_ManServ2 = "lime";}
ManSer1Bean msb2 = new ManSer1Bean(String.valueOf(con3.getAttribute(on3,"Uptime")),String.valueOf(jvm_ManServ2),(String)con3.getAttribute(on3,"JavaVersion"),(String)con3.getAttribute(on3,"OSVersion"),String.valueOf(con3.getAttribute(on3,"HeapFreeCurrent")),String.valueOf(con3.getAttribute(on3,"HeapSizeMax")),String.valueOf(con3.getAttribute(on3,"HeapSizeCurrent")),(String)con3.getAttribute(on3,"OSName"),status_ManServ2);
arr.add(msb2);
System.out.println("MBean SERVER CONNECTION OBTAINED...ArrayList Created");
     return arr;
catch(Exception e){
     System.out.println("in Catch");
     System.out.println(e.getMessage());
     e.printStackTrace();
     return null;
     finally {
          jmxCon1.close();
          jmxCon2.close();
     jmxCon3.close();
     System.out.println("CONNECTION CLOSED");
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Answer 1

Here is the original stacktrace:
java.io.IOException: Failed to retrieve RMIServer stub: javax.naming.NameNotFoundException: Name weblogic.management.mbeanservers.runtime is not bound in this Context
     at javax.management.remote.rmi.RMIConnector.connect(Unknown Source)
     at javax.management.remote.rmi.RMIConnector.connect(Unknown Source)
     at com.tcs.sbi.psg.monitoring.models.JMXCore.connect2FetchData(JMXCore.java:57)
     at com.tcs.sbi.psg.monitoring.servlets.Weblogic_10_Connect.doGet(Weblogic_10_Connect.java:23)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:627)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
     at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:873)
     at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
     at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
     at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
     at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
     at java.lang.Thread.run(Unknown Source)
Caused by: javax.naming.NameNotFoundException: Name weblogic.management.mbeanservers.runtime is not bound in this Context
     at org.apache.naming.NamingContext.lookup(NamingContext.java:770)
     at org.apache.naming.NamingContext.lookup(NamingContext.java:153)
     at org.apache.naming.SelectorContext.lookup(SelectorContext.java:137)
     at javax.naming.InitialContext.lookup(Unknown Source)
     at javax.management.remote.rmi.RMIConnector.findRMIServerJNDI(Unknown Source)
     at javax.management.remote.rmi.RMIConnector.findRMIServer(Unknown Source)
     ... 20 more
getMessage() returns this:
Failed to retrieve RMIServer stub: javax.naming.NameNotFoundException: Name weblogic.management.mbeanservers.runtime is not bound in this Context
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