package com.dgex.offspring.providers.bitcoinaverage; import org.apache.log4j.Logger; import com.dgex.offspring.providers.service.Currencies; import com.dgex.offspring.providers.service.ICurrency; public class PerHourMonthlyUSD extends PerHourMonthly { private static Logger logger = Logger.getLogger(PerHourMonthlyUSD.class); private static PerHourMonthlyUSD instance = null; public static PerHourMonthlyUSD getInstance() { logger.info("getInstance()"); if (instance == null) instance = new PerHourMonthlyUSD(Currencies.USD); return instance; } public PerHourMonthlyUSD(ICurrency base) { super(base); logger.info("new PerHourMonthlyUSD(" + base + ""); } }