IPreferenceStore preferenceStore= JavaPlugin.getDefault().getJavaTextTools().getPreferenceStore();
IPreferenceStore preferenceStore= JavaPlugin.getDefault().getPreferenceStore();
	public JavaPackageFragmentRootCompletionProcessor(IPackageFragmentRoot packageFragmentRoot) {		fPackageFragmentRoot= packageFragmentRoot;		fComparator= new JavaCompletionProposalComparator();		IPreferenceStore preferenceStore= JavaPlugin.getDefault().getJavaTextTools().getPreferenceStore();		String triggers= preferenceStore.getString(PreferenceConstants.CODEASSIST_AUTOACTIVATION_TRIGGERS_JAVA);		fProposalAutoActivationSet = triggers.toCharArray();	}