reference to elements in array

[Igor]

I'm working with a username system that retrieves every ID and sees if there is a name attached to that specific ID. Since the great majority of ID's does not have a name attached to it, it takes quite some unnecessary time. To prevent this, I'd like to try the following:

int [] usedIDs = {1,6,34,69,306,486 etc...};

for (int i = 0; i < usedIDs.length; i++) {
//System.out.println(usedIDs[i]);
}

and then, to from there on handle the IDs that are filled as just an integer.
So something like:

int usedID = usedIDs[1];
int usedID = usedIDs[2];
etc.

Which of course doesn't really work. So I want it to, with increments by one, go through every instance of usedIDs[n] and pass that simple integer on to the rest of the program.
I suspect I need another loop somewhere, but anyone have any concrete ideas on how to fix this?

thanks,

[Abdul Ajis]

Hey try to use HashMap , put your id as a key and value as what u want

Then whenever the id comes in , you can easily pick up from the hashmap

Hope this fix your issue , this way u can reduce loops