Example usage for java.util Map containsKey

Introduction

In this page you can find the example usage for java.util Map containsKey.

Prototype

boolean containsKey(Object key);

Source Link

Document

Returns true if this map contains a mapping for the specified key.

Usage

From source file:com.datastax.sparql.ConsoleCompiler.java

private static void printHelp(final int exitCode) throws IOException {
    final Map<String, String> env = System.getenv();
    final String command = env.containsKey("LAST_COMMAND") ? env.get("LAST_COMMAND") : "sparql-gremlin.sh";
    printWithHeadline("Usage Examples",
            String.join("\n", command + " -f examples/modern1.sparql", command + " < examples/modern2.sparql",
                    command + " <<< 'SELECT * WHERE { ?a e:knows ?b }'",
                    command + " -g crew < examples/crew1.sparql"));
    if (exitCode >= 0) {
        System.exit(exitCode);/*from  w w  w .  ja v a2s. c  om*/
    }
}

From source file:Main.java

public static <K, V> Map<K, V> putAndCreateTreeMapIfAbsent(Map<K, V> map, K key, V value) {
    if (map == null) {
        map = new TreeMap<K, V>();
        map.put(key, value);//from   w  w w .  j  a  v a  2  s.  co  m
    } else if (!map.containsKey(key)) {
        map.put(key, value);
    }
    return map;
}

From source file:Main.java

@SuppressWarnings("unchecked")
public static void filtrerDoublonsSurPlace(List objets) {
    Map objetsDejaPresents = new HashMap();
    for (Iterator i = objets.iterator(); i.hasNext();) {
        Object objet = i.next();//from ww  w.  j a  va  2  s  .  c o  m
        if (!objetsDejaPresents.containsKey(objet))
            objetsDejaPresents.put(objet, null);
        else
            i.remove();
    }
}

From source file:flink.benchmark.AdvertisingTopologyNative.java

private static String getKafkaTopic(Map conf) {
    if (!conf.containsKey("kafka.topic")) {
        throw new IllegalArgumentException("No kafka topic found!");
    }/*w w w  .  jav a2s  .  c  o  m*/
    return (String) conf.get("kafka.topic");
}

From source file:flink.benchmark.AdvertisingTopologyNative.java

private static String getRedisHost(Map conf) {
    if (!conf.containsKey("redis.host")) {
        throw new IllegalArgumentException("No redis host found!");
    }//w  w w  .j  av a 2s .  com
    return (String) conf.get("redis.host");
}

From source file:flink.benchmark.AdvertisingTopologyNative.java

private static String getZookeeperServers(Map conf) {
    if (!conf.containsKey("zookeeper.servers")) {
        throw new IllegalArgumentException("Not zookeeper servers found!");
    }/*from  w  w w. ja  va2  s  .com*/
    return listOfStringToString((List<String>) conf.get("zookeeper.servers"),
            String.valueOf(conf.get("zookeeper.port")));
}

From source file:Main.java

public static String[] intersect(String[] arr1, String[] arr2) {
    Map<String, Boolean> map = new HashMap<>();
    LinkedList<String> list = new LinkedList<>();
    for (String str : arr1) {
        if (!map.containsKey(str)) {
            map.put(str, Boolean.FALSE);
        }/*  ww w. j av  a 2s  .co  m*/
    }

    for (String str : arr2) {
        if (map.containsKey(str)) {
            map.put(str, Boolean.TRUE);
        }
    }

    for (Map.Entry<String, Boolean> e : map.entrySet()) {
        if (e.getValue().equals(Boolean.TRUE)) {
            list.add(e.getKey());
        }
    }
    String[] result = {};
    return list.toArray(result);
}

From source file:com.memetix.gun4j.expand.UrlExpander.java

public static String expand(final String shortUrl) throws Exception {
    if (shortUrl != null) {
        final StringBuilder sb = new StringBuilder();
        sb.append(PARAM_NAME);//from  w  w  w  .  j av a 2 s . c  o m
        sb.append(EQUALS);
        sb.append(URLEncoder.encode(shortUrl, ENCODING));

        Map<String, String> results = parseResponse(post(SERVICE_URL, sb.toString()));

        if (results.containsKey(shortUrl))
            return results.get(shortUrl);
        else
            return shortUrl.toString();
    } else {
        return null;
    }
}

From source file:melnorme.utilbox.tests.CommonTestExt.java

protected static <K, V> void checkMapContains(Map<K, V> map, K key, V expectedValue) {
    assertTrue(map.containsKey(key));
    V value = map.remove(key);/*from   www  . ja v  a2 s  .  c  om*/
    assertAreEqual(value, expectedValue);
}

From source file:Main.java

public static <K, V> void putIfAbsent(Map<K, V> from, Map<K, ? super V> to) {
    if (from == null || to == null) {
        return;//from   ww  w.  j  a va 2 s  .  c  om
    }
    for (Entry<K, V> entry : from.entrySet()) {
        if (!to.containsKey(entry.getKey())) {
            to.put(entry.getKey(), entry.getValue());
        }
    }
}