Unidata Support wrote:
------- Forwarded Message
To: support-netcdf-java@xxxxxxxxxxxxxxxx
From: "Alain Boucher" <boucher@xxxxxxxxxxxxxxxxxxxxxxx>
Subject: netCDF Java - NetcdfFile open method does not work as suggested
Organization: UCAR/Unidata
Keywords: 200502151901.j1FJ1u9O023527
Institution: Fisheries and Oceans Canada
Package Version: 2.2 (alpha)
Operating System: WindowsXP
Hardware Information: Intel P4
Inquiry: Hi there,
I have downloaded the latest release of the Java NetCDF library. I noticed
that when using the open(String location) method on a NetcdfFile object, the
method crashes when the file is empty (size of 0 bytes).
I am not sure if the problem results from an ill-formed Netcdf structure or
from the null size of the file, but the result is I get a OutOfMemoryError.
However, the API suggests that it should throw an IOException() if the
method fails.
If I am misinterpreting what the method should do, does that mean I have to
open a File object (from java.io) to first check if the file is a 0-length file?
Thanks a lot in advance and congratulations on the great work you did of
making that Java Netcdf library! It is actually very helpful to our department!
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Hi Alan
When i run the NetcdfFile.main()
public static void main( String[] arg) throws Exception {
try {
String filename = "C:/data/bad/zero.nc";
NetcdfFile ncfile = NetcdfFile.open(filename);
System.out.println();
System.out.println( ncfile.toString());
ncfile.close();
} catch (Exception e) {
e.printStackTrace();
}
}
I get:
java.io.IOException: Cant read C:/data/bad/zero.nc: not a valid NetCDF file.
at ucar.nc2.NetcdfFile.open(NetcdfFile.java:231)
at ucar.nc2.NetcdfFile.open(NetcdfFile.java:183)
at ucar.nc2.NetcdfFile.open(NetcdfFile.java:141)
at ucar.nc2.NetcdfFile.main(NetcdfFile.java:841)
can you try that and send me your output? thanks
