Example usage for java.util NavigableMap higherKey

Introduction

In this page you can find the example usage for java.util NavigableMap higherKey.

Prototype

K higherKey(K key);

Source Link

Document

Returns the least key strictly greater than the given key, or null if there is no such key.

Usage

From source file:Main.java

public static void main(String args[]) {
    Calendar now = Calendar.getInstance();
    Locale locale = Locale.getDefault();

    Map<String, Integer> names = now.getDisplayNames(Calendar.DAY_OF_WEEK, Calendar.LONG, locale);
    NavigableMap<String, Integer> nav = new TreeMap<String, Integer>(names);
    System.out.printf("Whole list:%n%s%n", nav);
    System.out.printf("Key higher after Sunday: %s%n", nav.higherKey("Sunday"));
}

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From source file:Main.java

public static void main(String args[]) {

    NavigableMap<String, String> nav = new TreeMap<String, String>();
    nav.put("A", "a");
    nav.put("B", "b");
    nav.put("C", "c");
    nav.put("D", "d");
    nav.put("E", "e");
    nav.put("F", "f");
    System.out.println(nav);/*w w  w  .j  a v a  2s . c om*/
    System.out.println(nav.higherKey("G"));
}

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From source file:com.google.gwt.emultest.java.util.TreeMapTest.java

public void testHigherKey() {
    K[] keys = getSortedKeys();/*from   w w  w.  j  a va 2s.com*/
    V[] values = getSortedValues();
    NavigableMap<K, V> map = createNavigableMap();

    // test with a single entry map
    map.put(keys[0], values[0]);
    assertEquals(null, map.higherKey(keys[0]));
    assertEquals(keys[0], map.higherKey(getLessThanMinimumKey()));
    // is it consistent with other methods
    assertEquals(map.keySet().toArray()[0], map.higherKey(getLessThanMinimumKey()));

    // test with two entry map
    map.put(keys[1], values[1]);
    assertEquals(keys[0], map.higherKey(getLessThanMinimumKey()));
    assertEquals(keys[1], map.higherKey(keys[0]));
    assertNull(map.higherKey(keys[1]));
    assertNull(map.higherKey(getGreaterThanMaximumKey()));

    try {
        map.higherKey(null);
        assertTrue("expected exception", useNullKey());
    } catch (NullPointerException e) {
        assertFalse("unexpected NPE", useNullKey());
    }
    map.clear();
    assertNull(map.higherKey(keys[1]));
    assertNull(map.higherKey(null));
}

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From source file:org.apache.cassandra.dht.tokenallocator.ReplicationAwareTokenAllocatorTest.java

private static double replicatedTokenOwnership(Token token, NavigableMap<Token, Unit> sortedTokens,
        ReplicationStrategy<Unit> strategy) {
    TestReplicationStrategy ts = (TestReplicationStrategy) strategy;
    Token next = sortedTokens.higherKey(token);
    if (next == null)
        next = sortedTokens.firstKey();//from   ww w  . ja va 2 s .c  om
    return ts.replicationStart(token, sortedTokens.get(token), sortedTokens).size(next);
}

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