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From: Chan Huntington on 5 Apr 2010 11:57
No one likes these kind of questions, but I thought I'd ask, to see if anyone has had any experience.

The following error appears when using the "file>import data" menu command. It is obviously related to the data preview, but I have no idea how to fix java errors...

********************

??? Java exception occurred:
java.lang.NullPointerException

Error in ==> uiimport>variablePreview at 599
sheetName=sn_htable.get(char(getSheetName(b)));

??? Error while evaluating com.mathworks.mde.dataimport.ImportProxy VariablePreviewEventCallback

??? Java exception occurred:
java.lang.NullPointerException

Error in ==> uiimport>variablePreview at 599
sheetName=sn_htable.get(char(getSheetName(b)));

??? Error while evaluating com.mathworks.mde.dataimport.ImportProxy VariablePreviewEventCallback

********************
A little more info, a "version -java" command yields:
Java 1.6.0_17-b04-248-10M3025 with Apple Inc. Java HotSpot(TM) 64-Bit Server VM mixed mode

I just upgraded to 2010a (from 2009b) to try to eliminate the problem, but obviously didn't work. Running on OS X 10.6.3.

Thanks for any advice!
From: Ashish Uthama on 6 Apr 2010 08:11
On Mon, 05 Apr 2010 16:57:21 -0300, Chan Huntington <channing(a)umich.edu>
wrote:

> No one likes these kind of questions, but I thought I'd ask, to see if
> anyone has had any experience.
>
> The following error appears when using the "file>import data" menu
> command. It is obviously related to the data preview, but I have no
> idea how to fix java errors...
>
> ********************
>
> ??? Java exception occurred:
> java.lang.NullPointerException
>
> Error in ==> uiimport>variablePreview at 599
> sheetName=sn_htable.get(char(getSheetName(b)));
> ??? Error while evaluating com.mathworks.mde.dataimport.ImportProxy
> VariablePreviewEventCallback
>
> ??? Java exception occurred:
> java.lang.NullPointerException
>
> Error in ==> uiimport>variablePreview at 599
> sheetName=sn_htable.get(char(getSheetName(b)));
> ??? Error while evaluating com.mathworks.mde.dataimport.ImportProxy
> VariablePreviewEventCallback
>
> ********************
> A little more info, a "version -java" command yields:
> Java 1.6.0_17-b04-248-10M3025 with Apple Inc. Java HotSpot(TM) 64-Bit
> Server VM mixed mode
>
> I just upgraded to 2010a (from 2009b) to try to eliminate the problem,
> but obviously didn't work. Running on OS X 10.6.3.
>
> Thanks for any advice!

What kind of file are you trying to import? It looks like an excel file; I
believe support for XLS file is limited on a mac. (It should not be
issuing java errors though.) Did you try the XLSREAD function directly?

I would suggest mailing tech support a copy (remove sensitive data) of the
file you are trying to import along with OS details.
http://www.mathworks.com/support/contact_us/index.html
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