特化流IntStream、LongStream的集合

List<Long> driverIds = drivers.stream().map(DriverCMDParamBO::getId).collect(Collectors.toList());

List<Long> driverIds2 = drivers.stream().mapToLong(DriverCMDParamBO::getId).boxed().collect(Collectors.toList());

List<Long> driverIds3 = drivers.stream().mapToLong(DriverCMDParamBO::getId)
                .collect(() -> new ArrayList<Long>(), List::add, List::addAll);

List<Long> driverIds4 = drivers.stream().mapToLong(DriverCMDParamBO::getId)
                .collect((Supplier<ArrayList<Long>>) ArrayList::new, List::add, List::addAll);

特化流的集合几种处理方式

List<Long> driverIds = drivers.stream().map(DriverCMDParamBO::getId).collect(Collectors.toList());

List<Long> driverIds2 = drivers.stream().mapToLong(DriverCMDParamBO::getId).boxed().collect(Collectors.toList());

List<Long> driverIds3 = drivers.stream().mapToLong(DriverCMDParamBO::getId)
                .collect(() -> new ArrayList<Long>(), List::add, List::addAll);

List<Long> driverIds4 = drivers.stream().mapToLong(DriverCMDParamBO::getId)
                .collect((Supplier<ArrayList<Long>>) ArrayList::new, List::add, List::addAll);