Iterator Problem

chrisych · #1 (**permalink**) 07-02-2010, 03:34 PM

Dear All,

I have a problem on using the iterator.

Why should I run “iter = myList.iterator();” one more time in order to get the correct results in TestLinkedList.java?

Please find the attached file for your reference.

Thank you very much!

Best Regards,
Chris.

copeg · #2 (**permalink**) 08-02-2010, 01:59 PM

The iterator should not be re-used after a collection has been modified, in fact according to the java API if you try to use the iterator after the collection has been modified a ConcurrentModificationException may be thrown. As per the java API:

Quote:

Note that Iterator.remove is the only safe way to modify a collection during iteration; the behavior is unspecified if the underlying collection is modified in any other way while the iteration is in progress.

The Collection Interface (The Java™ Tutorials > Collections > Interfaces)

kite98765 · #3 (**permalink**) 10-02-2010, 05:29 PM

Quote:

Originally Posted by chrisych

Dear All,

I have a problem on using the iterator.

Why should I run “iter = myList.iterator();” one more time in order to get the correct results in TestLinkedList.java?

Please find the attached file for your reference.

Thank you very much!

Best Regards,
Chris.

It'd be much easier if you placed your code useing the provided shortcut. If you read the "before you post" sticky thread, you would know to put your code in this:

If this is your first time here, there a few rules we would like you to follow before posting:

Quote:

1. Use code blocks for your code, please! To use code blocks, put [ code] before the code and [/ code] after it. It will look like this:

Java Code

Java Code

Some code

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