Hi, two comments: 1. File.GetLastAccessTime does not really work on most systems. By default Windows does not track file access as that may create a heavy load on the file system; you can enable it through the registry somehow but I would not recommend that. 2. IMO LastModificationTime is much more useful than CreationTime, since LastModificationTime is about the file content, whereas CreationTime is about the empty file. So when I now copy an old fle, it normally keeps its LastModificationTime but it gets its CreationTime set to now. BTW: The above could be different for each and every file system (NTFS, FAT, FAT32, ...) :) Luc Pattyn [Forum Guidelines] [My Articles] The quality and detail of your question reflects on the effectiveness of the help you are likely to get. Show formatted code inside PRE tags, and give clear symptoms when describing a problem.

From my side 5/5 :thumbsup:

Hi, 1. to execute a java class, you should issue the command "java [options] classname" which means "java" is the command, and everything else is in the arguments. So I would remove the "java " from cmdParams (I guess you already did that). 2. Furthermore, in Java there is a direct link between composite class names (as in your "za.co.lightWave.control.DialogInputControl") and your file hierarchy. So your classpath (either the enviroment variable or the options you specify) must lead to the location that is holding za\co\lightWave\control\DialogInputControl.class java.lang.NoClassDefFoundError is the error you would get when not satisfying this requirement. :) Luc Pattyn [Forum Guidelines] [My Articles] The quality and detail of your question reflects on the effectiveness of the help you are likely to get. Show formatted code inside PRE tags, and give clear symptoms when describing a problem.