content: package org.knowm.xchange.okcoin.service;
  
  import org.knowm.xchange.Exchange;
  import org.knowm.xchange.service.BaseExchangeService;
  import org.knowm.xchange.service.BaseService;
  
  public class OkCoinBaseService extends BaseExchangeService implements BaseService {
  
    /** Set to true if international site should be used */
    protected final boolean useIntl;
  
    /**
     * Constructor
     *
     * @param exchange
     */
    public OkCoinBaseService(Exchange exchange) {
  
      super(exchange);
  
      useIntl =
          (Boolean)
              exchange.getExchangeSpecification().getExchangeSpecificParameters().get("Use_Intl");
    }
  
    protected String createDelimitedString(String[] items) {
  
      StringBuilder commaDelimitedString = null;
      if (items != null) {
        for (String item : items) {
          if (commaDelimitedString == null) {
            commaDelimitedString = new StringBuilder(item);
          } else {
            commaDelimitedString.append(",").append(item);
          }
        }
      }
  
      return (commaDelimitedString == null) ? null : commaDelimitedString.toString();
    }
  }
  