How to refernce the set in a implementation of java.util.AbstractSet?

Hi, I have to extend abstract set and so I have to overwrite the add
method. I want to use the provided equal function,
to do the duplicate checking. But since the equal method takes only one parameter, I can't use an own collection class to manage the content.
So how can I access the default set, to add an element?
Thanks a lot in advance.
Greetings Michael

Hi, I had study the source-code and it seems that I have to implement a own structure to store the data (or use another collection).
The equal method is only suitable to compare the other collection and to prevent adding itself to it.
So the add-method must do the duplicate checking by calling contains().
Every other method uses the iterator-method, which itself remains abstract. So this is the vital method.
By the way, I had to extend this class to get a set, that remains the order of adding (which Hash- and TreeSet don't).
Greetings Michael

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Page 147
https://www.google.co.in/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&cad=rja&ved=0CDIQFjAB&url=https%3A%2F%2Fhelp.sap.com%2Fbusinessobject%2Fproduct_guides%2Fboexir4%2Fen%2Fxi4sp5_ffc_en.pdf&ei=nBAUU-iUM4WWrAeMuoCoDg&usg=AFQjCNHakXsEjd_yUk2y3lVdibf3PXpEOA&bvm=bv.61965928,d.bmk
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Message was edited by:
lad_tushar

thanks a lot....for intrest....
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How to refernce the set in a implementation of java.util.AbstractSet?

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