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It looks like automatically generated internationalization "Bundle.properties" files request to be saved when opening & closing them without making any changes. I believe they should get saved implicitly after being generated. Steps to Reproduce Create a new Java project Add a JFrame to it & Populate the JFrame with some components Select the root node of the Form file from the Navigator window & check the "Automatic internationalization" property on Bundle.properties file will get generated in the project window Open the Bundle.properties file, then close it without making any changes IDE will ask to save the file Product Version = NetBeans IDE Dev (Build 201210310001) Operating System = Windows 7 version 6.1 running on amd64 Java; VM; Vendor = 1.7.0_09 Runtime = Java HotSpot(TM) 64-Bit Server VM 23.5-b02
It would seem that it should be possible to close the file without asking if it was already opened as changed, but I have no idea how to do it. Once opened, the editor check for modification on closing - and it has no idea how or for what purpose the file was created. The workaround is to keep the file open till the GUI form that uses it is opened. Once the GUI form is saved, it saves the properties file as well. If the GUI form is closed without saving, it will also discard the changes in the properties file. So the GUI form automatically manages the modification state of the automatically associated properties file (but the properties editor itself if opened can't close without also closing the properties file - then the user must choose whether to save or not). I'd wish this could be done somewhat better, but I think it is only a minor obstacle for the user.