The Naming.list Method

The Naming.list(<url>) method takes 1 argument: the url of the rmiregistry whose contents are sought.
It returns an array of String, where each element of the array is the String name of some entry in the rmiregistry.
Below is a code fragment that checks to see if a particular entry is registered. This, for example, might be put in a method, boolean in(<url>, entry), that returns true if and only if entry is in the rmiregistry of the machine <url>.

public boolean in(String url, String entry) {

String[] remoteObjects;

try {    //get list from registry
    remoteObjects = Naming.list(url);
} catch (RemoteException e) {
    System.out.println("Couldn't locate Registry");
} catch (MalformedURLException e) {
    System.out.println("Couldn't parse URL string");
} catch (UnkownHostException e) {
    System.out.println("Can't locate host. Spelling? DNS running?");
}

for (int c = 0; c < remoteObjects.length; c++)
if (remoteObject[c].equals(entry))
return true;
return false;

}