Re: ArrayList

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#628

From: Kevin Dean [TeamB]
Date: Mon, 04 Apr 2005 15:25

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Petar Popara wrote:

> 
> Why this doesn't work:
> 
> ArrayList l = new ArrayList();
> l.add(new String("aaa")));
> String[] s = l.toArray();
> 
> JavaClassCast exception I got. What should I do? 

The toArray() method returns Object[], not String[] (see the source
code of ArrayList for implementation details).  If you want an array of
String, I suggest the following:

String[] s = (String[])l.toArray(new String[0]);

That will force ArrayList to build an array of the appropriate size of
type String[].  You then cast it back to the String[] type.

-- 
Kevin Dean [TeamB]
Dolphin Data Development Ltd.
http://www.datadevelopment.com/

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