code: @Override
  	public boolean isPrevJobNotEq(String actualJob) {
  		if (LOGGER.isTraceEnabled()) LOGGER.trace(String.format("check job prev: %s, act: %s", this.prevJob, actualJob));
  		return StringUtils.isEmpty(this.prevJob) || !actualJob.equals(this.prevJob);
  	}
docs: /* (non-Javadoc)
  @see de.chandre.admintool.quartz.AdminToolQuartzService#isPrevJobNotEq(java.lang.String)