Server config pattern :

URLS.java

public class URLS {
	
	public static final SERVER_CONFIGS.Server CURRENT_SERVER = SERVER_CONFIGS.Server.QA;
	
	private static class SERVER_CONFIGS
	{
		private static final String LIVE_URL = "http://services.joisar.com/svc/";
		private static final String QA_URL = "http://qaservices.joisar.com/svc/";
		private static enum Server {
			LIVE(LIVE_URL), QA(QA_URL);
			private String server_url;
			private Server(String server_url) {
				this.server_url = server_url;
			}
			private String getServerUrl() {
				return this.server_url;
			} 
		}
	}
	public static final String BASE_URL = CURRENT_SERVER.getServerUrl();
	public static final String IS_REGISTERED = BASE_URL+"IsRegistered";
	public static final String MOBILE_LOGIN = BASE_URL+"MobileLogin";
	public static final String UPLOAD_VIDEO = BASE_URL+"UploadVideo";
	public static final String UPDATE_UPLOAD_STATUS = BASE_URL+"UpdateUploadStatus";
}