Larry, The classpath needs to be set for the compilation and running of Simple_xy_rd.java For the csh shell % setenv CLASSPATH ".:<location of>/netcdfAll-4.1.jar" for sh % CLASSPATH=.:<location of>/netcdfAll-4.1.jar expand <location of> to be the absolute path of the netcdfAll-4.1.jar on your system compile % javac Simple_xy_rd.java run % java -Xmx256m Simple_xy_rd Robb... Ticket Details =================== Ticket ID: LEA-289229 Department: Support netCDF Java Priority: Normal Status: Open