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How can I be notified when a file is modified and saved E-mail
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The DataObject.Registry in LoadersAPI gives you a set of modified DataObjects. You can also add a listener and be notified when the set of modified objects changes.

As this operates on DataObjects you will first need to get a DataObect for your FileObject using DataObject.find(). Or you can take the modified DataObjects and do dataObject.getPrimaryFile().

Source: NetBeans FAQ


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