Рассмотрим следующий код:
if(!unmatchedNewTruckRequirementSet.isEmpty()){
for(Iterator<TruckRequirement> iterator = unmatchedNewTruckRequirementSet.iterator(); iterator.hasNext();){
TruckRequirement newTruckRequirement = iterator.next();
for(Iterator<TruckRequirement> iterator1 = oldTruckRequirementSet.iterator(); iterator1.hasNext();){
TruckRequirement oldTruckRequirement1 = iterator1.next();
if(oldTruckRequirement1.getTruckClassName().equals(newTruckRequirement.getTruckClassName())) {
LogUtil.logInfo("Truck Requirement Changed ", "Truck Requirement Changed : From : {0} to {1} where Truck Class is: {2}",
new Object[]{oldTruckRequirement1.getNumberOfTrucks(), newTruckRequirement.getNumberOfTrucks(), newTruckRequirement.getTruckClassName()});
unmatchedNewTruckRequirementSet.remove(newTruckRequirement);
}
}LogUtil.logInfo("Truck Requirement Added ", "New Truck Requirement Added with Truck Class : {0} and number of Trucks : {1}",
new Object[]{newTruckRequirement.getTruckClassName(), newTruckRequirement.getNumberOfTrucks()});
}else {
if(oldTruckRequirementSet.size() > unmatchedNewTruckRequirementSet.size()){
for(TruckRequirement truckRequirement : oldTruckRequirementSet) {
LogUtil.logInfo("Truck Requirement Removed ", "Truck Requirement Removed with Truck Class : {0}",
new Object[]{truckRequirement.getTruckClassName()});
}
}
}
Я использовал итератор для перебора двух хэш-наборов: unmatchedNewTruckRequiremnetSet
, а другой — oldTruckRequirementSet
. Когда я пытаюсь удалить набор из unmatchedNewTruckRequiremnetSet
, я получаю исключение одновременной модификации. Пожалуйста помоги.