Bug 76579 Formatter setup export: If file exists, overwritten w/o warning [code formatter]
On exporting java code formatter settings: If the selected file already exists, it is overwritten without warning.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/formatter/CodingStyleConfigurationBlock.java
final String title= FormatterMessages.getString("CodingStyleConfigurationBlock.load_profile.error.title"); 
				final String message= FormatterMessages.getString("CodingStyleConfigurationBlock.load_profile.error.message"); 
				ExceptionHandler.handle(e, fComposite.getShell(), title, message);
			}
			if (profiles == null || profiles.isEmpty())
				return;
			
			final CustomProfile profile= (CustomProfile)profiles.iterator().next();
			
			if (ProfileVersioner.getVersionStatus(profile) > 0) {
				final String title= FormatterMessages.getString("CodingStyleConfigurationBlock.load_profile.error_too_new.title"); 
				final String message= FormatterMessages.getString("CodingStyleConfigurationBlock.load_profile.error_too_new.message"); 
			    MessageDialog.openWarning(fComposite.getShell(), title, message);
			}
			
			if (fProfileManager.containsName(profile.getName())) {
				final AlreadyExistsDialog aeDialog= new AlreadyExistsDialog(fComposite.getShell(), profile, fProfileManager);
				if (aeDialog.open() != Window.OK) 
					return;
			}
			ProfileVersioner.updateAndComplete(profile);
			fProfileManager.addProfile(profile);
		}
	}
	
	private class PreviewController implements Observer {
		public PreviewController() {
			fProfileManager.addObserver(this);
			fJavaPreview.setWorkingValues(fProfileManager.getSelected().getSettings());
			fJavaPreview.update();