When I say indexof() for an ArrayList I get the first occurunce of that object. How can I get all of the occurunces in an ArrayList of a specific object?
Thank you.
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When I say indexof() for an ArrayList I get the first occurunce of that object. How can I get all of the occurunces in an ArrayList of a specific object?
Thank you.
Do you know how to write a loop?
Yes but my knowladge for this purpose is not enough.
Can you provide a guidence or a simple example ?
Maybe like starting a new loop everytime with the index I have in an ArrayList over and over again?
The API is your friend - there are plenty of methods to let you loop over the items and check for Object equality of said items.
ArrayList (Java Platform SE 6)
I looked at this and couldnt find anything handy. I am trying to learn how to do it correctly as well.
Really? Iterator, size, get...none of these don't seem like they would be handy? Break the problem down. Figure out how to loop over the elements, then figure out how to check object equalityQuote:
Originally Posted by fatabass
No sorry, the only way I can think of is that boring looping over getting the index everytime, and starting a new loop until I can't find any other occurunce..
Read the entire API documentation for the List interface; especially the part that describes the subList( ... ) method.
kind regards,
Jos