Event creation

EventManager.java

public class EventManager {

	private interface EventFactory {
		TS3Event createEvent(HashMap<String, String> eventData);
	}

	/*
	 * Single-line EventFactory
	 */
	private static final HashMap<String, EventFactory> EVENT_FACTORIES_1 = new HashMap<String, EventFactory>() {{
		put("notifytextmessage", new EventFactory() { public TS3Event createEvent(HashMap<String, String> eventData) { return new TextMessageEvent(eventData); }});
		put("notifycliententerview", new EventFactory() { public TS3Event createEvent(HashMap<String, String> eventData) { return new ClientJoinEvent(eventData); }});
		put("notifyclientleftview", new EventFactory() { public TS3Event createEvent(HashMap<String, String> eventData) { return new ClientLeaveEvent(eventData); }});
		put("notifyserveredited", new EventFactory() { public TS3Event createEvent(HashMap<String, String> eventData) { return new ServerEditedEvent(eventData); }});
		put("notifychanneledited", new EventFactory() { public TS3Event createEvent(HashMap<String, String> eventData) { return new ChannelEditedEvent(eventData); }});
		put("notifychanneldescriptionchanged", new EventFactory() { public TS3Event createEvent(HashMap<String, String> eventData) { return new ChannelDescriptionEditedEvent(eventData); }});
		put("notifyclientmoved", new EventFactory() { public TS3Event createEvent(HashMap<String, String> eventData) { return new ClientMovedEvent(eventData); }});
		put("notifychannelcreated", new EventFactory() { public TS3Event createEvent(HashMap<String, String> eventData) { return new ChannelCreateEvent(eventData); }});
		put("notifychanneldeleted", new EventFactory() { public TS3Event createEvent(HashMap<String, String> eventData) { return new ChannelDeletedEvent(eventData); }});
		put("notifychannelmoved", new EventFactory() { public TS3Event createEvent(HashMap<String, String> eventData) { return new ChannelMovedEvent(eventData); }});
		put("notifychannelpasswordchanged", new EventFactory() { public TS3Event createEvent(HashMap<String, String> eventData) { return new ChannelPasswordChangedEvent(eventData); }});
	}};

	private static TS3Event createEvent_1(String notifyName, String notifyBody) {
		final HashMap<String, String> eventData = new DefaultArrayResponse(notifyBody).getArray().get(0);
		final EventFactory factory = EVENT_FACTORIES_1.get(notifyName);
		if (factory == null) {
			throw new TS3UnknownEventException(notifyName + " " + notifyBody);
		}

		return factory.createEvent(eventData);
	}

	/*
	 * Explicit EventFactory
	 */
	private static final HashMap<String, EventFactory> EVENT_FACTORIES_2 = new HashMap<>();
	static {
		EVENT_FACTORIES_2.put("notifytextmessage", new EventFactory() {
			@Override
			public TS3Event createEvent(HashMap<String, String> eventData) {
				return new TextMessageEvent(eventData);
			}
		});
		EVENT_FACTORIES_2.put("notifycliententerview", new EventFactory() {
			@Override
			public TS3Event createEvent(HashMap<String, String> eventData) {
				return new ClientJoinEvent(eventData);
			}
		});
		EVENT_FACTORIES_2.put("notifyclientleftview", new EventFactory() {
			@Override
			public TS3Event createEvent(HashMap<String, String> eventData) {
				return new ClientLeaveEvent(eventData);
			}
		});
		EVENT_FACTORIES_2.put("notifyserveredited", new EventFactory() {
			@Override
			public TS3Event createEvent(HashMap<String, String> eventData) {
				return new ServerEditedEvent(eventData);
			}
		});
		EVENT_FACTORIES_2.put("notifychanneledited", new EventFactory() {
			@Override
			public TS3Event createEvent(HashMap<String, String> eventData) {
				return new ChannelEditedEvent(eventData);
			}
		});
		EVENT_FACTORIES_2.put("notifychanneldescriptionchanged", new EventFactory() {
			@Override
			public TS3Event createEvent(HashMap<String, String> eventData) {
				return new ChannelDescriptionEditedEvent(eventData);
			}
		});
		EVENT_FACTORIES_2.put("notifyclientmoved", new EventFactory() {
			@Override
			public TS3Event createEvent(HashMap<String, String> eventData) {
				return new ClientMovedEvent(eventData);
			}
		});
		EVENT_FACTORIES_2.put("notifychannelcreated", new EventFactory() {
			@Override
			public TS3Event createEvent(HashMap<String, String> eventData) {
				return new ChannelCreateEvent(eventData);
			}
		});
		EVENT_FACTORIES_2.put("notifychanneldeleted", new EventFactory() {
			@Override
			public TS3Event createEvent(HashMap<String, String> eventData) {
				return new ChannelDeletedEvent(eventData);
			}
		});
		EVENT_FACTORIES_2.put("notifychannelmoved", new EventFactory() {
			@Override
			public TS3Event createEvent(HashMap<String, String> eventData) {
				return new ChannelMovedEvent(eventData);
			}
		});
		EVENT_FACTORIES_2.put("notifychannelpasswordchanged", new EventFactory() {
			@Override
			public TS3Event createEvent(HashMap<String, String> eventData) {
				return new ChannelPasswordChangedEvent(eventData);
			}
		});
	}

	// Same as createEvent_1
	private static TS3Event createEvent_2(String notifyName, String notifyBody) {
		final HashMap<String, String> eventData = new DefaultArrayResponse(notifyBody).getArray().get(0);
		final EventFactory factory = EVENT_FACTORIES_2.get(notifyName);
		if (factory == null) {
			throw new TS3UnknownEventException(notifyName + " " + notifyBody);
		}

		return factory.createEvent(eventData);
	}

	/*
	 * Switch statement
	 */
	private static TS3Event createEvent(String notifyName, String notifyBody) {
		final HashMap<String, String> eventData = new DefaultArrayResponse(notifyBody).getArray().get(0);

		switch (notifyName) {
			case "notifytextmessage":
				return new TextMessageEvent(eventData);
			case "notifycliententerview":
				return new ClientJoinEvent(eventData);
			case "notifyclientleftview":
				return new ClientLeaveEvent(eventData);
			case "notifyserveredited":
				return new ServerEditedEvent(eventData);
			case "notifychanneledited":
				return new ChannelEditedEvent(eventData);
			case "notifychanneldescriptionchanged":
				return new ChannelDescriptionEditedEvent(eventData);
			case "notifyclientmoved":
				return new ClientMovedEvent(eventData);
			case "notifychannelcreated":
				return new ChannelCreateEvent(eventData);
			case "notifychanneldeleted":
				return new ChannelDeletedEvent(eventData);
			case "notifychannelmoved":
				return new ChannelMovedEvent(eventData);
			case "notifychannelpasswordchanged":
				return new ChannelPasswordChangedEvent(eventData);
			default:
				throw new TS3UnknownEventException(notifyName + " " + notifyBody);
		}
	}
}