private String[] strings;

  @BeforeExperiment
  @SuppressWarnings("unchecked")
  void setUp() throws Exception {
    String prefix =
        useMonitor ? "com.google.common.util.concurrent.MonitorBased" : "java.util.concurrent.";
    String className = prefix + queueType + "BlockingQueue";
    Constructor<?> constructor = Class.forName(className).getConstructor(int.class);