Question

I have an “do – while” loop with 5000 numbers that should get added to an array during each run through the loop like this:

The problem is that every time the loop is executed, the numbers get overwritten and only the last runthrough of data is in the array once the loop finishes.

I use this code:

    long cursor = -1;
    long[] fArray = new long[100000];  // more than enough space in array
    IDs ids = twitter.getFollowersIDs(name, cursor); // start with first page of 5000 numbers

    do 
    {                       
        ids = twitter.getFollowersIDs(name, cursor);            
        fArray = twitter.getFollowersIDs(name, cursor).getIDs(); // this gets Array with 5000 numbers every time until "empty"
        cursor = ids.getNextCursor();   // jump to next array with 5000 new numbers     
    } while (ids.hasNext());

Answer 1

You are always only writing into the first 5000 elements of your very huge array.

Instead you want to assign the result of the getFollowersIDs() call to a separate local array and afterwards use arraycopy to copy the 5000 current followers into the much larger array of all followers.