Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > comp.lang.java.programmer > #6405

Problem with generics and dynamic array copy

Path csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!news.albasani.net!.POSTED!not-for-mail
From Sebastian <sebastian@undisclosed.invalid>
Newsgroups comp.lang.java.programmer
Subject Problem with generics and dynamic array copy
Date Fri, 22 Jul 2011 19:26:21 +0200
Organization albasani.net
Lines 23
Message-ID <j0cbru$289$1@news.albasani.net> (permalink)
Mime-Version 1.0
Content-Type text/plain; charset=ISO-8859-15; format=flowed
Content-Transfer-Encoding 7bit
X-Trace news.albasani.net b+h1IX8JrBqckGEbPJ45B8Sf3N16+f+cU0Vc+Ko2+egeRwppflTeqxTXo2N/RQ1T99XVTaUwC3GT/v0V5/3iwA==
NNTP-Posting-Date Fri, 22 Jul 2011 17:26:22 +0000 (UTC)
Injection-Info news.albasani.net; logging-data="AnUC/Pj5D6fUaHepO+dLg+hr8iEb0reKAqOibCo+sjpBysFkUOFvvLZ12wP+tR7wgWzWH1f3idMhHVJhJhAONYckHe1heHJeJxtGTDlJHeg/gaK5utza4xPW+8awCzXU"; mail-complaints-to="abuse@albasani.net"
User-Agent Mozilla/5.0 (Windows; U; Windows NT 5.1; de; rv:1.9.2.15) Gecko/20110303 Thunderbird/3.1.9
Cancel-Lock sha1:lPIpfosM4I9l5qg5xrQCOwFZGGw=
Xref x330-a1.tempe.blueboxinc.net comp.lang.java.programmer:6405

Show key headers only | View raw


Hello there,

how can I make the compile error go away? The marked line is wrong:
Type mismatch: cannot convert from Class<capture#2-of ?> to Class<T>

   /**
    * Copies the specified array to a new array with the same component
    * type and length as the given array.
    * @param <T> the type of the array elements
    * @param src the array to be copied
    * @return the copy
    */
   public static final <T> T[] arraycopy( T[] src )
   {
     Class<T> componentType = src.getClass().getComponentType(); // !!!!
     @SuppressWarnings("unchecked")
     T[] dest = (T[]) Array.newInstance( componentType, src.length );
     System.arraycopy( src, 0, dest, 0, src.length );
     return dest;
   }

I'd be grateful for a hint.
-- Sebastian

Back to comp.lang.java.programmer | Previous | NextNext in thread | Find similar


Thread

Problem with generics and dynamic array copy Sebastian <sebastian@undisclosed.invalid> - 2011-07-22 19:26 +0200
  Re: Problem with generics and dynamic array copy Sebastian <sebastian@undisclosed.invalid> - 2011-07-22 19:30 +0200
    Re: Problem with generics and dynamic array copy markspace <-@.> - 2011-07-22 11:23 -0700
      Re: Problem with generics and dynamic array copy Sebastian <sebastian@undisclosed.invalid> - 2011-07-22 20:36 +0200
        Re: Problem with generics and dynamic array copy Robert Klemme <shortcutter@googlemail.com> - 2011-07-22 21:27 +0200
          Re: Problem with generics and dynamic array copy lewbloch <lewbloch@gmail.com> - 2011-07-22 13:33 -0700
          Re: Problem with generics and dynamic array copy Sebastian <sebastian@undisclosed.invalid> - 2011-07-22 22:37 +0200
            Re: Problem with generics and dynamic array copy lewbloch <lewbloch@gmail.com> - 2011-07-22 15:49 -0700

csiph-web