How to get the list of active devices in current wifi network?

Question

Hi All,
I am going to a start a new Network based app. So please any one give me an idea on the below question.
How to get the list of active devices in current wifi network?

Answer 1

Nope I want the log-in user to retrieve its Group where he is belong. I have this following code
strUsername = Request.getParameter("username").toLowerCase().trim()+"@dev.test.com.ph";
strPassword = Request.getParameter("password").toLowerCase().trim();
Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY, INITCTX);
env.put(Context.PROVIDER_URL, MY_HOST);
env.put(Context.SECURITY_AUTHENTICATION, "simple");
env.put(Context.SECURITY_PRINCIPAL,strUsername);
env.put(Context.SECURITY_CREDENTIALS, strPassword);
// enable tracing
env.put("com.sun.naming.ldap.trace.ber", System.err);
// Create the initial context
DirContext initCtx = new InitialDirContext(env);
// Get the target context
DirContext targetCtx = (DirContext)initCtx.lookup("");
SearchControls constraints = new SearchControls();
constraints.setSearchScope(SearchControls.SUBTREE_SCOPE);
// Perform the search on the target context
NamingEnumeration enum = targetCtx.search("","(userPrincipalName="+strUsername+")",constraints);
javax.naming.directory.Attributes attrs;
NameClassPair item;
String[] attrIds = new String[]{"MemberOf"};
// For each answer found, get its "Groups" attribute
// If relative, resolve it relative to the target context
// If not relative, resolve it relative to the initial context
while (enum.hasMore()) {
item = (NameClassPair)enum.next();
Out.println(item);
attrs = targetCtx.getAttributes(item.getName(), attrIds);
Out.println(attrs + "<br>");
     initCtx.close();
It returns all this string :
{memberof=memberOf: CN=CMCanadaRD,OU=Groups / Teams,DC=dev,DC=test,DC=com,DC=ph, CN=iMngrCanadaRW,OU=Groups / Teams,DC=dev,DC=test,DC=com,DC=ph, CN=Domain Users,CN=Users,DC=dev,DC=test,DC=com,DC=ph, CN=Backup Operators,CN=Builtin,DC=dev,DC=test,DC=com,DC=ph, CN=Administrators,CN=Builtin,DC=dev,DC=test,DC=com,DC=ph}
How can i retrieve the Group named CMCanadaRW and CMCanadaRD on the Attribute?
Thanks