public void addWorkload( Long periodNumber, Double workload, Double spent, Integer lastWorkedStep) { Workload newWorkload = new Workload(); newWorkload.setPeriodNumber(periodNumber); newWorkload.setWorkload(workload); newWorkload.setSpentWorkload(spent); newWorkload.setLastWorkedStep(lastWorkedStep); newWorkload.setIteration(this); this.workloads.add(newWorkload); }