Java/Android Question

[javabiker]

I've been coding in Java since about 1990, but retired some 3 years ago. I recently got into developing apps for the Android platform and now have a very basic question, so basic I risk being laughed at. I get a cursor from a SQLite3 table that contains 3 rows. I extract the content of each cursor row into an data object and add this object to an ArrayList. So now my ArrayList contains 3 objects. In debug I can see that the 3 objects correspond to each table row, so OK. However, when I iterate through the list all I get is 3 objects in which the content of each is the last DO in the list. I've tried using an iterator, do-while and a for-loop and they're all the same. I've written tests and they all confirm this scenario. So, I give up! Here's the code I use to iterate the list.

private void displayDataObjects(ArrayList<TestDO> objects) {
TestDO testDO = null;
System.out.println("List has: " + objects.size() + " entries");
Iterator<TestDO> list1 = objects.iterator();

while (list1.hasNext()) {
// testDO = list1.next();
System.out.println((list1.next()).getNAME());
}
}
..getNAME always shows the last entry in the List!!
I've confirmed that when I call this method I have 3 distinct DO's containing the correct data. BTW: I've tried ListIterator and Vector.
What the heck am I missing?
Any help appreciated!

[DarrylBurke]

Show the code that constructs the data objects and adds them to the ArrayList.

db

[Tolls]

How (and where) did you confirm that there are three distinct objects there?

[klondike]

I'm writing some Android apps that use a SQLite DB. After getting some table rows into a Cursor, extracting each row's data into a Data Object (Properties correspond to table row columns), then assigning each DO to an ArrayList I encounter a problem.
Iterating thru the ArrayList to get my data out of each DO (for reporting purposes) I get the data from the last row in all of the report rows.
Here's the code:

private void displayDataObjects(ArrayList<TestDO> objects) {
System.out.println("ArrayList: " + objects.size() + " entries");
Iterator<TestDO> list = objects.iterator();

while (list.hasNext()) {
// testDO = list.next();
System.out.println((list.next()).getNAME());
}
}

The name is the same for all rows. I've inspected the contents of each DO as it is assigned to the ArrayList and it's all correct. So what am I doing wrong in the iteration?
Oh, and I've substituted for-loop, do-while etc and get the same result.

[AndrewM16921]

Not 100% sure on your problem, but try rewriting it like this and see if it helps:

private void displayDataObjects(List<TestDO> list)
{
	for(TestDO o : list)
	{
		System.out.println(o.getNAME());
	}
}

[DarrylBurke]

1. Why the second account?
2. Please go through the Forum Rules, particularly the second and third paragraphs.

I've closed the 'klondike' account.

db

[Tolls]

The name is the same for all rows. I've inspected the contents of each DO as it is assigned to the ArrayList and it's all correct. So what am I doing wrong in the iteration?
Oh, and I've substituted for-loop, do-while etc and get the same result.

Darryl has already asked you to show us the code that produces the List.
That's where your problem lies.