public static void sleep(long sleepTime){
  try {
    Thread.sleep(sleepTime);
  }
 catch (  InterruptedException e) {
    LOG.error("Unexpectedly interrupted!");
  }
}

public static void sleep ( long sleepTime ) { try { Thread . sleep ( sleepTime ) ; } catch ( InterruptedException e ) { LOG . error ( "Unexpectedly interrupted!" ) ; } }
sleep the current thread .
