Is it safe to programmatically modify a file which is open in the editor?
Note: These pages are being reviewed.
It is not safe to modify a
getOutputStream) which is open and modified in the editor. In fact, it is not possible: calling
FileObject.lock() will fail. If you modify the
java.io.File (bypassing the Filesystems API) you may cause a conflict.
If the file is not modified in the editor (easily checkable via
DataObject.isModified()) then after your output stream is closed the file will be reloaded with the new contents.
If the file is modified you can make changes to the open editor buffer: use
EditorCookie to acquire the Swing
Document and make changes through that. It may be considered impolite to then save the file if it was modified before.
Applies to: NetBeans 4.0 and newer