Groups > comp.lang.java.programmer > #6408

Re: Problem with generics and dynamic array copy

From	markspace <-@.>
Newsgroups	comp.lang.java.programmer
Subject	Re: Problem with generics and dynamic array copy
Date	2011-07-22 11:23 -0700
Organization	A noiseless patient Spider
Message-ID	<j0cf75$8pm$1@dont-email.me> (permalink)
References	<j0cbru$289$1@news.albasani.net> <j0cc2t$289$2@news.albasani.net>

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On 7/22/2011 10:30 AM, Sebastian wrote:

>> public static final <T> T[] arraycopy( T[] src )
>> {
>> Class<T> componentType = src.getClass().getComponentType(); // !!!!


RTFM.  getComponentType() returns Class<?>, not Class<T>.

<http://download.oracle.com/javase/6/docs/api/java/lang/Class.html#getComponentType%28%29>

public Class<?> getComponentType()

     Returns the Class representing the component type of an array. If 
this class does not represent an array class this method returns null.

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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

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