Creating JLists with Object arrays or Vectors
When I create a Jlist with
jlist.setListdata(object[])
the jlist.getmodel().getSize() method always returns the object arrays dimension versus the size of the list.
When I use a vector instead of the object array it seems to work.
Just wanted to know if there is anyway to get the true size of a list created with an object array?
[363 byte] By [
MikeCobba] at [2007-9-28 12:07:33]

When I use an object array to initialize my Jlist, I get the entire dimension object array returned as the size of my Jlist.
for example
object[] test=new Object[15];
....
test[1]=some object;
test[2]=some object;
//then I add it to the jlist
jlist.setListData(test)
//now I want to use a for loop to extract the list data
size=jlist.getModel().getSize()
size will be 15 everytime. I want it to be 2. I dont want it to count the null values.
When I replace the Object Array with a vector:
Vector test=new Vector(1);
it works correctly.
what do you think?
I see. You allocated your array too big. Use the correct size for your array -- in your example that would be 3 instead of 15. If you don't know in advance what the correct size is going to be then a Vector (preferably an ArrayList) would be the correct object to use anyway, so the question shouldn't arise.