}
private void calculateDistancesFromJob2Job() {
logger.info("preprocess distances between locations ...");
StopWatch stopWatch = new StopWatch();
stopWatch.start();
int nuOfDistancesStored = 0;
for (Job i : vrp.getJobs().values()) {
TreeSet<ReferencedJob> treeSet = new TreeSet<ReferencedJob>(
new Comparator<ReferencedJob>() {
@Override