Multiton

Multiton

class Multiton {
	static HashMap<String, Multiton> map = new HashMap<String, Multiton>(); 
	
	private Multiton(String key) { ... }
	
	static Multiton newMultion(String key) {
		result = map.get(key); 
		if(result == null) {
			result = new Multiton(key); 
			map.add(key, result); 
		}
		return result; 
	}
}