Code example for ArrayList

Methods: add, contains

0
		addPreference(preference);
	} 
	 
	@Implementation 
	public boolean addPreference(Preference preference) {
		if (preferenceList.contains(preference)) {
            return true; 
        } 
		 
		// TODO currently punting on ordering logic 
		preferenceList.add(preference);
 
		return true; 
	} 
	 
	@Implementation 
	public Preference getPreference(int index) {
		return preferenceList.get(index);
	} 
	 
	@Implementation