How to check jndi bind/unbind status?

[milkywayfarer]

I'm looking for way of checking bind status of object and appropriate JNDI name.

For example, I've got some LDAP jms queue name: "/TheRootContext/SomeSubContext/SOME.QUEUE.NAME:queue"

I need to check that appropriate queue exists and it is binded with passed name.

What will be the correct way to check "bind status"?

I see such algorithm:

• Perform jndi lookup to ensure that provided name exists.

Object obj;
try {
    obj = ctx.lookup("/TheRootContext/SomeSubContext/SOME.QUEUE.NAME:queue");
} catch(NamingException ex) {
    // process naming exception: name not found, name syntax incorrect, ...
}

• %I don't know what to do next%, but suggest something like checking that:

obj != null && obj instanceof javax.jms.Queue

===
Another way, suggested here: http://stackoverflow.com/questions/5...-unbind-status
is to use listBindings method, passing to it parent context name: and checking what interested binding present in returned NamingEnumeration. But this is actually the same as previous method. This way something like this should be done:

NamingEnumeration bindings;
try {
    bindings = ctx.listBindings("/TheRootContext/SomeSubContext/SOME.QUEUE.NAME");
} catch(NamingException ex) {
    // process naming exception: name not found, name syntax incorrect, ...
}

boolean isFound, isBinded;
while (bindings!=null && bindings.hasMore()) {
    Binding bd = (Binding) bindings.next();
    if(bd.getName().equals("queue")) {
         isFound = true;
         isBinded = bd.getObject() != null && bd.getObject() instanceof javax.jms.Queue) ;
        break;
    }
}

System.out.println("Is binded: " + isFound && isBinded);

So, what is the correct way?