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Re: 980421: NetCDF for Java

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  • Subject: Re: 980421: NetCDF for Java
  • Date: Wed, 22 Apr 1998 11:14:18 -0600
>From: "Jun Chen" <address@hidden>
>Subject: NetCDF for Java
>Organization: Bay Area Air Quality Management District
>Keywords: 199804211739.LAA21442 netCDF Java

Jun,

> I downloaded the tar file and untar at UNIX, then ftp to my Window 95, I put
> ucar under classes subdirectory to windows\java, and added
> c:\windows\java\ucar\multiarray and c:\windows\java\ucar\netcdf to Java
> Virtual machine search directory inside VJ++ for source files and class
> files.

I don't think you should need to add these directories to your search
directory, since they should be found by the package name hierarchy if
the ucar/ directory is in the right place.

>     ... Then I open the TestNetcdf.java under tests subdirectory,  got
> following errors while trying to build it.  I'm very new at Java, and thank
> you very much for your help :-)
> 
> 
> 
> Deleting intermediate files and output files for project 'TestNetcdf - Java
> Virtual Machine Debug'.
> --------------------Configuration: TestNetcdf - Java Virtual Machine
> Debug--------------------
> Compiling...
> Microsoft (R) Visual J++ Compiler Version 1.01.7022
> Copyright (C) Microsoft Corp 1996. All rights reserved.
> E:\Download\ucar\src\ucar\tests\TestNetcdf.java(24,8) : error J0025:
> Expected statement
> E:\Download\ucar\src\ucar\tests\TestNetcdf.java(28,9) : error J0025:
> Expected statement
> E:\Download\ucar\src\ucar\tests\TestNetcdf.java(29,9) : error J0025:
> Expected statement
> E:\Download\ucar\src\ucar\tests\TestNetcdf.java(32,10) : error J0025:
> Expected statement
> E:\Download\ucar\src\ucar\tests\TestNetcdf.java(116,10) : error J0025:
> Expected statement
> E:\Download\ucar\src\ucar\tests\TestNetcdf.java(126,10) : error J0025:
> Expected statement
> E:\Download\ucar\src\ucar\tests\TestNetcdf.java(199,9) : error J0025:
> Expected statement
> E:\Download\ucar\src\ucar\tests\TestNetcdf.java(200,9) : error J0025:
> Expected statement
> Error executing jvc.exe.
> 
> TestNetcdf - 8 error(s), 0 warning(s)

These are not very helpful error messages.  I can't tell from these what
the problem is ...

> Where line 24 is: final int rank = ma.getRank();
> Where line 28 is: final int [] dims = ma.getLengths();
> Where line 29 is: final int last = dims[0] -1;
> Where line 32 is: final MultiArray inner =
> Where line 116 is: final int nlats = latD.getLength();
> Where line 126 is: final int nlons = lonD.getLength();
> Where line 199 is: final Schema sc2 = new Schema(nc);
> Where line 200 is: final NetcdfFile clone = new NetcdfFile("clone.nc", true,
> true,
> 
> seems VJ++ didn't load the Netcdf Java classes correctly, also question
> about:
>     import ucar.multiarray.MultiArray;
> 
> ucar.multiarray.MultiArray is interface, not class, right? ma.getRank() is
> under ucar.multiarray.MultiArray?
> 
> Please help :-)

The MultiArray interface extends the MultiArrayInfo interface, which has
the getRank() method.  So anything that implements the MultiArray
interface will have the getRank() method.

Sorry I can't be more helpful, but it sounds like you just need to get
your CLASSPATH set up right for using third-party Java packages, and I
don't know the details of doing that with J++.

--Russ

_____________________________________________________________________

Russ Rew                                         UCAR Unidata Program
address@hidden                     http://www.unidata.ucar.edu