list.parallelStream().map(p -> {
p.setAdmin("123");
return p; }).collect(Collectors.toList());
exBlack.parallelStream().map(p -> "(" + p.getAccountCode() + "," + p.getCifNo() + ")")
.collect(Collectors.joining(","));
jfPoolBusinessList.stream().map(
p->p.getBusinessNumber()
).collect(Collectors.joing(","))
List<String> stringList = objectList.stream()
.map(Object::toString)
.collect(Collectors.toList());
jfBlackCustomers.parallelStream().forEach(e -> {
Optional<JfPointAgg> optionalJfPointAgg = jfPointAggList.parallelStream().filter(p -> p.getCifNo().equals(e.getCifNo())).findAny();
e.setCifName(optionalJfPointAgg.orElse(null).getCustName());
});