firstKey - Code Search

guava-tests/test/com/google/common/collect/TreeBasedTableTest.java

  }

  public void testRowMapFirstKey() {
    sortedTable = create("foo", 1, 'a', "bar", 1, 'b', "foo", 3, 'c');
    assertThat(sortedTable.rowMap().firstKey()).isEqualTo("bar");
  }

  public void testRowMapLastKey() {
    sortedTable = create("foo", 1, 'a', "bar", 1, 'b', "foo", 3, 'c');
    assertThat(sortedTable.rowMap().lastKey()).isEqualTo("foo");
  }

Created: Fri Apr 03 12:43:13 GMT 2026

- Last Modified: Fri Mar 13 13:01:07 GMT 2026

- 15.3K bytes

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github.com/google/guava

android/guava/src/com/google/common/collect/Synchronized.java

      synchronized (mutex) {
        return delegate().comparator();
      }
    }

    @Override
    public K firstKey() {
      synchronized (mutex) {
        return delegate().firstKey();
      }
    }

    @Override
    public SortedMap<K, V> headMap(K toKey) {
      synchronized (mutex) {

Created: Fri Apr 03 12:43:13 GMT 2026

- Last Modified: Fri Aug 08 15:11:10 GMT 2025

- 53K bytes

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github.com/google/guava

guava/src/com/google/common/collect/Synchronized.java

      synchronized (mutex) {
        return delegate().comparator();
      }
    }

    @Override
    public K firstKey() {
      synchronized (mutex) {
        return delegate().firstKey();
      }
    }

    @Override
    public SortedMap<K, V> headMap(K toKey) {
      synchronized (mutex) {

Created: Fri Apr 03 12:43:13 GMT 2026

- Last Modified: Fri Aug 08 15:11:10 GMT 2025

- 56.9K bytes

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github.com/google/guava

guava-testlib/src/com/google/common/collect/testing/testers/SortedMapNavigationTester.java

    assertThrows(NoSuchElementException.class, () -> navigableMap.firstKey());
  }

  @CollectionSize.Require(ZERO)
  public void testEmptyMapLast() {
    assertThrows(NoSuchElementException.class, () -> assertNull(navigableMap.lastKey()));
  }

  @CollectionSize.Require(ONE)
  public void testSingletonMapFirst() {
    assertEquals(a.getKey(), navigableMap.firstKey());
  }

  @CollectionSize.Require(ONE)

Created: Fri Apr 03 12:43:13 GMT 2026

- Last Modified: Wed Mar 18 18:06:14 GMT 2026

- 6.1K bytes

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github.com/google/guava

android/guava-testlib/src/com/google/common/collect/testing/testers/SortedMapNavigationTester.java

    assertThrows(NoSuchElementException.class, () -> navigableMap.firstKey());
  }

  @CollectionSize.Require(ZERO)
  public void testEmptyMapLast() {
    assertThrows(NoSuchElementException.class, () -> assertNull(navigableMap.lastKey()));
  }

  @CollectionSize.Require(ONE)
  public void testSingletonMapFirst() {
    assertEquals(a.getKey(), navigableMap.firstKey());
  }

  @CollectionSize.Require(ONE)

Created: Fri Apr 03 12:43:13 GMT 2026

- Last Modified: Wed Mar 18 18:06:14 GMT 2026

- 6.1K bytes

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github.com/google/guava

guava-tests/test/com/google/common/collect/FilteredSortedMapTest.java

    unfiltered.put("banana", 6);
    unfiltered.put("cat", 3);
    unfiltered.put("dog", 5);

    SortedMap<String, Integer> filtered = Maps.filterEntries(unfiltered, CORRECT_LENGTH);
    assertThat(filtered.firstKey()).isEqualTo("banana");
    assertThat(filtered.lastKey()).isEqualTo("cat");
  }

  public void testHeadSubTailMap_filteredMap() {
    SortedMap<String, Integer> unfiltered = createUnfiltered();

Created: Fri Apr 03 12:43:13 GMT 2026

- Last Modified: Thu Mar 12 17:47:10 GMT 2026

- 2.3K bytes

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github.com/google/guava

guava/src/com/google/common/collect/ImmutableSortedMap.java

   */
  @Override
  public Comparator<? super K> comparator() {
    return keySet().comparator();
  }

  @Override
  public K firstKey() {
    return keySet().first();
  }

  @Override
  public K lastKey() {
    return keySet().last();
  }

  private ImmutableSortedMap<K, V> getSubMap(int fromIndex, int toIndex) {

Created: Fri Apr 03 12:43:13 GMT 2026

- Last Modified: Thu Jan 08 18:10:02 GMT 2026

- 52.1K bytes

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github.com/google/guava

android/guava/src/com/google/common/collect/ImmutableSortedMap.java

   */
  @Override
  public Comparator<? super K> comparator() {
    return keySet().comparator();
  }

  @Override
  public K firstKey() {
    return keySet().first();
  }

  @Override
  public K lastKey() {
    return keySet().last();
  }

  private ImmutableSortedMap<K, V> getSubMap(int fromIndex, int toIndex) {

Created: Fri Apr 03 12:43:13 GMT 2026

- Last Modified: Thu Jan 08 18:10:02 GMT 2026

- 54.7K bytes

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github.com/google/guava

guava-tests/test/com/google/common/collect/TreeMultimapNaturalTest.java

    TreeMultimap<String, Integer> multimap = createPopulate();
    SortedMap<String, Collection<Integer>> asMap = multimap.asMap();
    assertEquals(Ordering.natural(), asMap.comparator());
    assertThat(asMap.firstKey()).isEqualTo("foo");
    assertThat(asMap.lastKey()).isEqualTo("tree");
    Set<Integer> fooValues = ImmutableSet.of(1, 3, 7);
    Set<Integer> googleValues = ImmutableSet.of(2, 6);

Created: Fri Apr 03 12:43:13 GMT 2026

- Last Modified: Fri Mar 13 13:01:07 GMT 2026

- 22.5K bytes

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github.com/google/guava

android/guava-tests/test/com/google/common/collect/TreeMultimapNaturalTest.java

    TreeMultimap<String, Integer> multimap = createPopulate();
    SortedMap<String, Collection<Integer>> asMap = multimap.asMap();
    assertEquals(Ordering.natural(), asMap.comparator());
    assertThat(asMap.firstKey()).isEqualTo("foo");
    assertThat(asMap.lastKey()).isEqualTo("tree");
    Set<Integer> fooValues = ImmutableSet.of(1, 3, 7);
    Set<Integer> googleValues = ImmutableSet.of(2, 6);

Created: Fri Apr 03 12:43:13 GMT 2026

- Last Modified: Fri Mar 13 13:01:07 GMT 2026

- 22.5K bytes

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