A Count.md

Data Set

   List<Footballer> getFootballers() {
        return List.of(
                new Footballer("Messi", 32, Gender.MALE, List.of("CF","CAM", "RF")),
                new Footballer("Ibrahim", 28, Gender.MALE, List.of("CF", "CAM", "LF")),
                new Footballer("Arthur", 23, Gender.MALE, List.of("CM", "CAM")),
                new Footballer("Cristiano Ronaldo", 27, Gender.MALE, List.of("GK")),
                new Footballer("Surinder", 20, Gender.MALE, List.of("CM", "CDM")),
                new Footballer("Jennifer", 29, Gender.FEMALE, List.of("CF", "CAM")),
                new Footballer("Jana", 17, Gender.FEMALE, List.of("CB")),
                new Footballer("Alexia", 25, Gender.FEMALE, List.of("CAM", "RF", "LF"))
        );
    }

Count:

        long femalesMoreThan24y= footballerList.stream()
                .filter(footballer -> footballer.getGender().equals(Gender.FEMALE))
                .map(Footballer::getAge)
                .filter(age -> age > 24)
                .count();

        System.out.println("femalesMoreThan24y = " + femalesMoreThan24y);
        //prints femalesMoreThan24y = 2

	Next: B For Each.md ▶