获取符合条件的第一个元素

这可能是您要寻找的：

yourStream    .filter()    .findFirst()    .get();

一个例子：

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);}

输出为：

At the first stop at Station1 there were 250 passengers in the train.