Example usage for java.util List isEmpty

Introduction

In this page you can find the example usage for java.util List isEmpty.

Prototype

boolean isEmpty();

Source Link

Document

Returns true if this list contains no elements.

Usage

From source file:OSGiLocator.java

/**
 * Finds the preferred provider for the given service. The preferred provider
 * is the last one added to the set of providers.
 * //from   ww w.j  a  va2s  . c  o m
 * @param serviceName
 *          The fully qualified name of the service interface.
 * @return The last provider added for the service if any exists. Otherwise,
 *         it returns <tt>null</tt>.
 * @throws IllegalArgumentException
 *           if serviceName is <tt>null</tt>
 */
public static synchronized Class<?> locate(final String serviceName) {
    if (serviceName == null) {
        throw new IllegalArgumentException("serviceName cannot be null");
    }
    if (factories != null) {
        List<Callable<Class<?>>> l = factories.get(serviceName);
        if (l != null && !l.isEmpty()) {
            Callable<Class<?>> c = l.get(l.size() - 1);
            try {
                return c.call();
            } catch (Exception e) {
            }
        }
    }
    return null;
}

From source file:be.fedict.eid.applet.service.signer.odf.ODFSignatureVerifier.java

/**
 * Checks whether the ODF document available via the given URL has been
 * signed.//from   w  ww.j  a  va  2 s. c  o m
 *
 * @param odfUrl
 * @return
 * @throws IOException
 * @throws ParserConfigurationException
 * @throws SAXException
 * @throws org.apache.xml.security.signature.XMLSignatureException
 * @throws XMLSecurityException
 * @throws MarshalException
 * @throws XMLSignatureException
 */
public static boolean hasOdfSignature(URL odfUrl) throws IOException, ParserConfigurationException,
        SAXException, org.apache.xml.security.signature.XMLSignatureException, XMLSecurityException,
        MarshalException, XMLSignatureException {
    List<X509Certificate> signers = getSigners(odfUrl);
    return false == signers.isEmpty();
}

From source file:ch.ksfx.util.calc.AssetPriceSparser.java

public static List<Observation> sparseAssetPriceWithoutAveragingObservation(List<Observation> assetPrices,
        Integer sparsingSeconds) {
    Collections.sort(assetPrices, new ObservationDateComparator());

    Integer currentIndex = 0;// ww  w .  j ava 2s  . com
    List<Observation> sparsedPrices = new ArrayList<Observation>();

    for (Observation ap : assetPrices) {
        if (sparsedPrices.isEmpty()) {
            sparsedPrices.add(ap);
        }

        if (DateUtils.addSeconds(sparsedPrices.get(currentIndex).getObservationTime(), sparsingSeconds)
                .before(ap.getObservationTime())) {
            sparsedPrices.add(ap);
            currentIndex++;
        }
    }

    return sparsedPrices;
}

From source file:jp.primecloud.auto.tool.management.main.ConfigMain.java

public static void showPlatforms() {
    try {/*  ww  w. j  av a  2  s  .  c  o m*/
        String sql = "SELECT * FROM PLATFORM";
        List<Platform> platforms = SQLMain.selectExecuteWithResult(sql, Platform.class);
        if (platforms.isEmpty()) {
            System.out.println("??????");
            return;
        }
        StringBuilder titles = new StringBuilder();
        titles.append(StringUtils.rightPad("PlatformName", PAD_SIZE, " "));
        titles.append(StringUtils.rightPad("Status", PAD_SIZE, " "));
        System.out.println(titles.toString());
        for (Platform platform : platforms) {
            List<String> columns = new ArrayList<String>();
            columns.add(platform.getPlatformName());
            // ??
            if (BooleanUtils.isTrue(platform.getSelectable())) {
                columns.add("enable");
            } else {
                columns.add("disable");
            }

            for (String column : columns) {
                System.out.print(StringUtils.rightPad(column, PAD_SIZE, " "));
            }
            System.out.println();
        }
    } catch (Exception e) {
        e.printStackTrace();
        log.error(e.getMessage(), e);
    }
}

From source file:org.jboss.aerogear.unifiedpush.utils.perf.BatchUtils.java

public static void registerApplicationsViaBatchEndpoint(MassPushApplication massive, Session session) {

    List<PushApplication> pushApplications = new ArrayList<PushApplication>(massive.getApplications());

    while (!pushApplications.isEmpty()) {
        int toIndex = APPLICATION_PAGING;

        if (pushApplications.size() < APPLICATION_PAGING) {
            toIndex = pushApplications.size();
        }//www  .j a v  a2s.  c  o  m

        List<PushApplication> sublist = pushApplications.subList(0, toIndex);

        MassPushApplication mass = new MassPushApplication();
        mass.setApplications(sublist);

        Response response = session.givenAuthorized().contentType(ContentTypes.json())
                .header(Headers.acceptJson()).body(mass).post("/rest/mass/applications/generated");

        UnexpectedResponseException.verifyResponse(response, HttpStatus.SC_OK);

        pushApplications.removeAll(sublist);
    }

}

From source file:org.keycloak.connections.httpclient.ProxyMappings.java

/**
 * Creates a new  {@link ProxyMappings} from the provided {@code List} of proxy mapping strings.
 * <p>//from  w w  w  . j  a v  a  2 s  .  com
 *
 * @param proxyMappings
 */
public static ProxyMappings valueOf(List<String> proxyMappings) {

    if (proxyMappings == null || proxyMappings.isEmpty()) {
        return EMPTY_MAPPING;
    }

    List<ProxyMapping> entries = proxyMappings.stream() //
            .map(ProxyMapping::valueOf) //
            .collect(Collectors.toList());

    return new ProxyMappings(entries);
}

From source file:com.openquartz.glassmemo.Utils.java

public static void commitNewMemoList(final Context context, final String key, final List<String> memoList) {
    SharedPreferences.Editor sharedPrefEditor = PreferenceManager.getDefaultSharedPreferences(context).edit();

    if (!memoList.isEmpty()) {
        sharedPrefEditor.putString(key, new JSONArray(memoList).toString());
    } else {//from w w w .  java2s . c  o m
        sharedPrefEditor.putString(key, null);
    }

    sharedPrefEditor.commit();
}

From source file:gestion.GestorUsuario.java

public static JSONObject getLogin(String login, String pass) throws JSONException {
    Configuration configuration = new Configuration().configure();
    StandardServiceRegistryBuilder builder = new StandardServiceRegistryBuilder()
            .applySettings(configuration.getProperties());
    SessionFactory factory = configuration.buildSessionFactory(builder.build());
    Session sesion = factory.openSession();
    sesion.beginTransaction();// w  w w.jav a  2s .co  m
    String hql = "from Usuario where login = :login and pass = :pass";
    Query q = sesion.createQuery(hql);
    q.setString("login", login);
    q.setString("pass", pass);
    List<Usuario> usuarios = q.list();
    sesion.getTransaction().commit();
    sesion.flush();
    sesion.close();
    JSONObject obj = new JSONObject();
    if (usuarios.isEmpty()) {
        obj.put("r", false);
    } else {
        obj.put("r", true);
    }
    return obj;
}

From source file:Main.java

/**
 * Combines two lists into map, using first list as keys and second as values
 *
 * @param keys   List used as keys/*from w  ww .  j  a v  a  2  s. com*/
 * @param values List used as values
 * @param <K>    Type of values in keys list
 * @param <V>    Type of values in values list
 * @return {@link LinkedHashMap}
 */
public static <K, V> Map<K, V> combineLists(List<? extends K> keys, List<? extends V> values) {
    if (keys.size() != values.size()) {
        throw new IllegalArgumentException("Cannot combine lists with dissimilar sizes");
    }

    if (keys.isEmpty() && values.isEmpty()) {
        return Collections.emptyMap();
    }

    int size = values.size();

    Map<K, V> map = new LinkedHashMap<>(size);
    for (int i = 0; i < size; i++) {
        map.put(keys.get(i), values.get(i));
    }

    return map;
}

From source file:gate.termraider.util.Utilities.java

public static double meanDoubleList(List<Double> list) {
    if (list.isEmpty()) {
        return 0.0;
    }/* ww w.j a  va2  s .c o m*/
    // implied else
    double total = 0.0;
    for (Double item : list) {
        total += item;
    }
    return total / ((double) list.size());
}