Why could JTextPane::setText throw an Array Out of Bounds Exception?

Question

Why could be a possible reason for:

JTextPane p = new JTextPane();
p.setText("hello");

The exact code is rather long. So I'm not sure what parts I must show here.

It's something like:

Tab t = new Tab(jp1);
t.editortxt.setText("hello");

Tab extends JPanel and has in its constructor:

editortxt = new JTextPane();

i.e., editortxt is a property of Tab.

It throws this:

java.lang.ArrayIndexOutOfBoundsException: -1
at java.util.ArrayList.elementData(ArrayList.java:371)
at java.util.ArrayList.get(ArrayList.java:384)

I mean why would something so abstract throw when I use its own API?

Nothing because you're not showing us the relevant part of the code which throws this exception. — Alexis C., Nov 10 '13 at 12:31
@ZouZou, this was the exact line of code where the debugger stopped. What other part do you think is missing? — batman, Nov 10 '13 at 12:33
Impossible, the error is somewhere else. This two lines can't throw this exception. I don't know what your code looks like, but you're trying to access an element in your arrayList (maybe using indexOf ?). — Alexis C., Nov 10 '13 at 12:34
The only way I could see this line of code throwing this exception is if you did something like this `setText(someStringArray[10])` where 10 is out of bounds. — Paul Samsotha, Nov 10 '13 at 12:39
could you post the full stack trace? it should show who is calling ArrayList.get(). — Angular University, Nov 10 '13 at 12:53
I've put more code, but if that isn't sufficient, **I'll surely put what you ask**. — batman, Nov 10 '13 at 12:54
@learner, now this question makes good. I have voted for reopen. — Pradeep Simha, Nov 10 '13 at 14:03

score 0 · Answer 1 · answered Nov 10 '13 at 12:41

0

Verify are you passing correct index to ArrayList.get() method. It looks you are accessing the element from ArrayList that have size is zero.

answered Nov 10 '13 at 12:41

1 Answers1