[Bluej-discuss] Codepad Bug?

[Davin McCall]

Hi Brad,

Thanks for reporting this.

If you're interested the internal reason for this problem is that it is 
possible to load array classes by name using a classloader in Java 5 and 
prior, but apparently not with Java 6. For instance:

    this.getClass().getClassLoader().loadClass("[I")

... succeeds with Java 5 but not with 6 (note that "[I" is the Java's 
internal name for "int []"). I don't know if this should perhaps be 
classified as a Java bug. Anyway, BlueJ fails to load the array class 
and as a result misinterprets the type of the declaration. We can work 
around it by using Class.forName() internally instead (which still seems 
to allow loading array classes); I've implemented this for the next 
BlueJ release.

Davin


Brad Richards wrote:
> Hi all,
>
> When running BlueJ 2.2.0 with Java 1.6 on a Windows XP machine, I'm 
> not able to create array variables in the codepad.  For example:
>
>   
>>  int[] nums;
>>     
>   Error: incompatible types - found int but expected int[]
>   
>>  int[] nums = {1,2,3};
>>     
>   Error: cannot find symbol - constructor Integer(int[])
>
> I know this used to work.  It still *does* work on my Mac, running 
> BlueJ 2.2.0 with Java 1.5.  (I don't have access to a Windows machine 
> with Java 1.5 or I'd try that mix as well.)  Is this behavior a 
> result of the change in Java versions, or a bug in the codepad?  Does 
> anyone have a workaround for this?
>
> Thanks,
>      Brad
>
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