Re: [netcdf-java] [netcdfgroup] Obsolete logging dependency in toolsUI.jar

• To: Valliappa Lakshmanan <valliappa.lakshmanan@xxxxxxxx>
• Subject: Re: [netcdf-java] [netcdfgroup] Obsolete logging dependency in toolsUI.jar
• From: John Caron <caron@xxxxxxxxxxxxxxxx>
• Date: Thu, 26 Feb 2009 11:21:24 -0700

Hi Lak:

The next version of netcdf-java (4.0.35) will remove nlog4j.lib, instead using 
unbundled slf4j, with
option for log4j. It should be available later today or tommorrow.

For more details on logging, see:

  
http://www.unidata.ucar.edu/software/netcdf-java/reference/JarDependencies.html

Thanks for reporting this problem.

Valliappa Lakshmanan wrote:
> I tried  toolsUI-4.0.jar because I was having problems getting earlier
> versions of the netcdf API to read Grib2 files.
> 
> However, the toolsUI version seems to have a logging problem, and when I
> run my code (which uses log4j via Apache Commons), I get the following
> exception:
> 
>   [java] Exception in thread "main"
> java.lang.IncompatibleClassChangeError: Class org.apache.log4j.Logger
> does not implement the requested interface org.slf4j.Logger
>      [java]     at ucar.nc2.NetcdfFile.open(NetcdfFile.java:635)
>      [java]     at ucar.nc2.NetcdfFile.open(NetcdfFile.java:335)
>      [java]     at ucar.nc2.NetcdfFile.open(NetcdfFile.java:305)
>      [java]     at ucar.nc2.NetcdfFile.open(NetcdfFile.java:292)
>      [java]     at ucar.nc2.NetcdfFile.open(NetcdfFile.java:280)
> 
> ( I do have slf4j-api-1.1.0.jar and slf4j-log4j12-1.1.0.jar in my
> classpath )
> 
> Searching on the internet for the error indicates (see: 
> http://www.nabble.com/Trying-to-use-log4j-over-slf4j-td20249172.html )
> that it's because toolsUI.jar bundles the contents of nlog4.jar which is
> obsolete.
> 
> I can avoid the error by using netcdf-4.0.jar (which is what I did), but
> thought I'd report the problem.
> 
> Lak
> 
> 
> 
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