remove a object...

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tony - 08 Feb 2006 16:00 GMT

hi

i have a object Test and i have a array with many of their object

Test TestArray[20]...

how to remove a object from this array?

thanks

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Thomas Weidenfeller - 08 Feb 2006 16:12 GMT

> Test TestArray[20]...
>
> how to remove a object from this array?

Remove as in "the objects after the one removed should move up one
position in the array"?

If yes, the hard way is to either use a loop or arraycopy. If you also
want to shrink the array's size, you can't.

The better way is to use a class like ArrayList, which has the necessary
code already implemented.

/Thomas

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Oliver Wong - 08 Feb 2006 16:13 GMT

> hi
>
[quoted text clipped - 5 lines]
>
> thanks

You could set the corresponding entry in the array to null.

- Oliver

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Roedy Green - 08 Feb 2006 16:29 GMT

>i have a object Test and i have a array with many of their object
>
>Test TestArray[20]...
>
>how to remove a object from this array?

see http://mindprod.com/jgloss/arraylist.html#REMOVING

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Canadian Mind Products, Roedy Green.
http://mindprod.com Java custom programming, consulting and coaching.

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Roedy Green - 09 Feb 2006 06:57 GMT

On Wed, 08 Feb 2006 16:29:38 GMT, Roedy Green
<my_email_is_posted_on_my_website@munged.invalid> wrote, quoted or
indirectly quoted someone who said :

>>how to remove a object from this array?
>
>see http://mindprod.com/jgloss/arraylist.html#REMOVING

In case it is not obvious, you convert you array to ArrayList first,
also handled in that essay, and converting it back if necessary.

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Canadian Mind Products, Roedy Green.
http://mindprod.com Java custom programming, consulting and coaching.

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