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- this.stops.stream().filter(Stop s-> s.getStation().getName().equals(name));
- public class Train {
- private final String name;
- private final SortedSet<Stop> stops;
- public Train(String name) {
- this.name = name;
- this.stops = new TreeSet<Stop>();
- }
- public void addStop(Stop stop) {
- this.stops.add(stop);
- }
- public Stop getFirstStation() {
- return this.getStops().first();
- }
- public Stop getLastStation() {
- return this.getStops().last();
- }
- public SortedSet<Stop> getStops() {
- return stops;
- }
- public SortedSet<Stop> getStopsAfter(String name) {
- // return this.stops.subSet(, toElement);
- return null;
- }
- }
- import java.util.ArrayList;
- import java.util.List;
- public class Station {
- private final String name;
- private final List<Stop> stops;
- public Station(String name) {
- this.name = name;
- this.stops = new ArrayList<Stop>();
- }
- public String getName() {
- return name;
- }
- }
- yourStream
- .filter(/* your criteria */)
- .findFirst()
- .get();
- public static void main(String[] args) {
- class Stop {
- private final String stationName;
- private final int passengerCount;
- Stop(final String stationName, final int passengerCount) {
- this.stationName = stationName;
- this.passengerCount = passengerCount;
- }
- }
- List<Stop> stops = new LinkedList<>();
- stops.add(new Stop("Station1", 250));
- stops.add(new Stop("Station2", 275));
- stops.add(new Stop("Station3", 390));
- stops.add(new Stop("Station2", 210));
- stops.add(new Stop("Station1", 190));
- Stop firstStopAtStation1 = stops.stream()
- .filter(e -> e.stationName.equals("Station1"))
- .findFirst()
- .get();
- System.out.printf("At the first stop at Station1 there were %d passengers in the train.", firstStopAtStation1.passengerCount);
- }
- At the first stop at Station1 there were 250 passengers in the train.
- this.stops.stream().filter(Stop s-> s.getStation().getName().equals(name));
- this.stops.stream().filter((Stop s)-> s.getStation().getName().equals(name));
- this.stops.stream().filter(s -> s.getStation().getName().equals(name));
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