In Java8 you can use streams:
public static Carnet findByCodeIsIn(Collection<Carnet> listCarnet, String codeIsIn) {
return listCarnet.stream().filter(carnet -> codeIsIn.equals(carnet.getCodeIsin())).findFirst().orElse(null);
}
Additionally, in case you have many different objects (not only Carnet
) or you want to find it by different properties (not only by cideIsin
), you could build an utility class, to ecapsulate this logic in it:
public final class FindUtils {
public static <T> T findByProperty(Collection<T> col, Predicate<T> filter) {
return col.stream().filter(filter).findFirst().orElse(null);
}
}
public final class CarnetUtils {
public static Carnet findByCodeTitre(Collection<Carnet> listCarnet, String codeTitre) {
return FindUtils.findByProperty(listCarnet, carnet -> codeTitre.equals(carnet.getCodeTitre()));
}
public static Carnet findByNomTitre(Collection<Carnet> listCarnet, String nomTitre) {
return FindUtils.findByProperty(listCarnet, carnet -> nomTitre.equals(carnet.getNomTitre()));
}
public static Carnet findByCodeIsIn(Collection<Carnet> listCarnet, String codeIsin) {
return FindUtils.findByProperty(listCarnet, carnet -> codeIsin.equals(carnet.getCodeIsin()));
}
}