Bug 105926 [Formatter] Exporting Unnamed profile fails silently
When attempting to export an "Unnamed Profile" from the Project Preferences > Java Code Style > Formatter it will fail silently when it gets to ProfileStore.writeProfilesToStream(): for(final Iterator iter= profiles.iterator(); iter.hasNext();) { final Profile profile= (Profile)iter.next(); if (profile.isProfileToSave()) { final Element profileElement= createProfileElement(profile, document); rootElement.appendChild(profileElement); } } Since the unnamed profile is considered a shared profile and will write an xml file with the content. <?xml version="1.0" encoding="UTF-8"?> <profiles version="8"/> Instead of silently generating an xml file with no content it should rather throw up an error/warning or force a rename dialog. I'll try working on a patch to this respect.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/formatter/CodeFormatterConfigurationBlock.java
public StoreUpdater() {
			fProfileManager.addObserver(this);
		}
		public void update(Observable o, Object arg) {
			final int value= ((Integer)arg).intValue();
			switch (value) {
			case ProfileManager.PROFILE_DELETED_EVENT:
			case ProfileManager.PROFILE_RENAMED_EVENT:
			case ProfileManager.PROFILE_CREATED_EVENT:
			case ProfileManager.SETTINGS_CHANGED_EVENT:
				try {
					ProfileStore.writeProfiles(fProfileManager.getSortedProfiles(), fInstanceScope); 
					fProfileManager.commitChanges(fCurrContext);  
				} catch (CoreException x) {
					JavaPlugin.log(x);
				}
				break;
			case ProfileManager.SELECTION_CHANGED_EVENT:
				fProfileManager.commitChanges(fCurrContext); 
				break;
			}
		}
	}
	private class ProfileComboController implements Observer, SelectionListener {