CodingForums.com - Compare Just Created ArrayList to the one before

Hi,

I am having trouble figuring out how to compare each individual value of the ArrayList. I do this by assigning an empty ArrayList before the ArrayList I am about fill in but for some reason it fills both at the same time when I run the method. Do any of you have an idea why? Note: this code is not doing comparison but I can't fill them right in the first place to attempt to do comparison.

Code:

   

   List<Long> StationsArrayListG7 = new ArrayList<>();

    List<Long> StationsArrayListG7a = new ArrayList<>();





public void GetApplicationSpecificUserStats(MBeanServerConnection serverConnectionName) {



   StationsArrayListG7a = StationsArrayListG7; 

     

   String attrName = "current";   

   

   for(String stringName : gSelectedApplicationsFromFile) {

               

         try {

               String connectsName = "WowzaMediaServerPro:vHosts=VHosts,vHostName=_defaultVHost_,"

                            + "applications=Applications,applicationName=" + stringName + ",name=Connections";       

                   

               ObjectName connectsObjName = new ObjectName(connectsName);

               

               try {

               Long valueObj = (Long)serverConnectionName.getAttribute(connectsObjName, attrName);



               valueX = valueObj;        

               StationsArrayListG7.add(valueX);        

               

           } catch (MBeanException ex) {

               Logger.getLogger(GUI.class.getName()).log(Level.SEVERE, null, ex);

           } catch (AttributeNotFoundException ex) {

               Logger.getLogger(GUI.class.getName()).log(Level.SEVERE, null, ex);

           } catch (InstanceNotFoundException ex) {

               Logger.getLogger(GUI.class.getName()).log(Level.SEVERE, null, ex);

           } catch (ReflectionException ex) {

               Logger.getLogger(GUI.class.getName()).log(Level.SEVERE, null, ex);

           } catch (IOException ex) {

               Logger.getLogger(GUI.class.getName()).log(Level.SEVERE, null, ex);

               System.out.println("IOException Error has occured!");

           }

           }           



           catch (MalformedObjectNameException ex) {

               Logger.getLogger(GUI.class.getName()).log(Level.SEVERE, null, ex);

           }  

        

   }  

   

   

   }

When I do it with individual variable instead of array it works fine. I can't figure it out if I am doing it right assigning array StationsArrayListG7a = StationsArrayListG7;. I tried copy and stuff like that but it kept giving me null.

Thanks in advance.