Example usage for java.util Comparator reversed

Introduction

In this page you can find the example usage for java.util Comparator reversed.

Prototype

default Comparator<T> reversed() 

Source Link

Document

Returns a comparator that imposes the reverse ordering of this comparator.

Usage

From source file:Main.java

public static void main(String[] args) {
    Integer[] intArray = { 1, 2, 3, 4, 5, 6, 7, 8 };
    List<Integer> listOfIntegers = new ArrayList<>(Arrays.asList(intArray));

    Comparator<Integer> normal = Integer::compare;
    Comparator<Integer> reversed = normal.reversed();
    Collections.sort(listOfIntegers, reversed);

    listOfIntegers.stream().forEach(e -> System.out.print(e + " "));
    System.out.println("");

}

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From source file:Main.java

public static void main(String[] args) {

    List<String> friends = Arrays.asList("CSS", "HTML", "Oracle", "Dart");

    //same but reverse
    System.out.println("\nsort reverse:");
    Comparator<String> comp = (aName, bName) -> aName.compareTo(bName);

    friends.stream().sorted(comp.reversed()).forEach(System.out::println);
}

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From source file:Main.java

public static void main(String... args) {
    // Comparators
    Comparator<Person> comparator = (p1, p2) -> p1.firstName.compareTo(p2.firstName);

    Person p1 = new Person("A", "Z");
    Person p2 = new Person("B", "Z");

    System.out.println(comparator.compare(p1, p2));// > 0
    System.out.println(comparator.reversed().compare(p1, p2)); // < 0

}

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From source file:Main.java

public static void main(String[] args) throws Exception {
    Comparator<Person> comparator = (p1, p2) -> p1.firstName.compareTo(p2.firstName);
    Person p1 = new Person("John", "Doe");
    Person p2 = new Person("Alice", "Wonderland");
    comparator.compare(p1, p2); // > 0
    comparator.reversed().compare(p1, p2); // <0
}

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From source file:ch.rasc.wampspring.demo.various.grid.PropertyComparatorFactory.java

public static <T> Comparator<T> createComparator(String propertyName, SortDirection sortDirection) {
    try {/* w w w  .  ja v a  2 s  . c  om*/
        Comparator<T> comparator = new PropertyComparator<>(propertyName);

        if (sortDirection == SortDirection.DESC) {
            comparator = comparator.reversed();
        }

        return comparator;
    } catch (ParseException e) {
        return null;
    }
}

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From source file:ch.rasc.edsutil.PropertyComparatorFactory.java

public static <T> Comparator<T> createComparator(String propertyName, SortDirection sortDirection,
        boolean ignoreCase) {
    try {// ww  w .  j  a va  2s  . c o m
        Comparator<T> comparator = new PropertyComparator<>(propertyName, ignoreCase);

        if (sortDirection == SortDirection.DESCENDING) {
            comparator = comparator.reversed();
        }

        return comparator;
    } catch (ParseException e) {
        return null;
    }
}

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From source file:com.orange.clara.cloud.servicedbdumper.service.DbDumperServiceInstanceBindingService.java

private Map<String, Object> extractCredentials(List<DbDumperCredential> dbDumperCredentials) {
    SimpleDateFormat dateFormater = new SimpleDateFormat(this.dateFormat);
    Map<String, Object> credentials = Maps.newHashMap();
    List<Map<String, Object>> dumpFiles = new ArrayList<>();
    Map<String, Object> dumpFile;
    Comparator<DbDumperCredential> comparator = (d1, d2) -> d1.getCreatedAt().compareTo(d2.getCreatedAt());
    dbDumperCredentials.sort(comparator.reversed());
    for (DbDumperCredential dbDumperCredential : dbDumperCredentials) {
        dumpFile = Maps.newHashMap();/*from   w  w  w .  ja  v  a2  s  .co m*/
        dumpFile.put("download_url", dbDumperCredential.getDownloadUrl());
        dumpFile.put("show_url", dbDumperCredential.getShowUrl());
        dumpFile.put("filename", dbDumperCredential.getFilename());
        dumpFile.put("created_at", dateFormater.format(dbDumperCredential.getCreatedAt()));
        dumpFile.put("dump_id", dbDumperCredential.getId());
        dumpFile.put("size", dbDumperCredential.getSize());
        dumpFile.put("deleted", dbDumperCredential.getDeleted());
        dumpFile.put("tags", dbDumperCredential.getTags());
        dumpFiles.add(dumpFile);
    }
    credentials.put("dumps", dumpFiles);
    return credentials;
}

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From source file:fi.helsinki.opintoni.service.StudyAttainmentService.java

public List<StudyAttainmentDto> getStudyAttainments(String studentNumber, int limit, Locale locale) {
    Comparator<StudyAttainmentDto> studyAttainmentDtoComparator = this::compareStudyAttainments;

    return oodiClient.getStudyAttainments(studentNumber).stream()
            .map(a -> studyAttainmentConverter.toDto(a, locale)).sorted(studyAttainmentDtoComparator.reversed())
            .limit(limit).collect(Collectors.toList());
}

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From source file:alluxio.cli.fs.command.LsCommand.java

private List<URIStatus> sortByFieldAndOrder(List<URIStatus> statuses, String sortField, boolean reverse)
        throws IOException {
    Optional<Comparator<URIStatus>> sortToUse = Optional.ofNullable(SORT_FIELD_COMPARATORS.get(sortField));

    if (!sortToUse.isPresent()) {
        throw new InvalidArgumentException(ExceptionMessage.INVALID_ARGS_SORT_FIELD.getMessage(sortField));
    }/* w  w  w.j  a v  a2  s.c  o m*/

    Comparator<URIStatus> sortBy = sortToUse.get();
    if (reverse) {
        sortBy = sortBy.reversed();
    }

    return statuses.stream().sorted(sortBy).collect(Collectors.toList());
}

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From source file:fi.helsinki.opintoni.service.StudyAttainmentService.java

private List<StudyAttainmentDto> getWhitelistedAttainments(List<OodiStudyAttainment> studyAttainments,
        List<Long> whitelistedAttainmentIds, Locale locale) {
    Comparator<StudyAttainmentDto> studyAttainmentDtoComparator = this::compareStudyAttainments;
    return studyAttainments.stream().filter(a -> whitelistedAttainmentIds.contains(a.studyAttainmentId))
            .map(a -> studyAttainmentConverter.toDto(a, locale)).sorted(studyAttainmentDtoComparator.reversed())
            .collect(Collectors.toList());
}

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