firstKey - Code Search

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

    public Comparator<? super K> comparator() {
      assertTrue(Thread.holdsLock(mutex));
      return delegate().comparator();
    }

    @Override
    public K firstKey() {
      assertTrue(Thread.holdsLock(mutex));
      return delegate().firstKey();
    }

    @Override
    public K lastKey() {
      assertTrue(Thread.holdsLock(mutex));
      return delegate().lastKey();
    }

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

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

- 12.8K bytes

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github.com/google/guava

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

        delegate().clear();
      }
    };
  }

  @Override
  public @Nullable Entry<K, V> firstEntry() {
    return delegate.firstEntry();
  }

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

  @Override
  public @Nullable Entry<K, V> floorEntry(K key) {
    return delegate.floorEntry(checkValid(key));
  }

  @Override
  public @Nullable K floorKey(K key) {

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

- Last Modified: Mon Mar 23 21:06:42 GMT 2026

- 7.4K bytes

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github.com/google/guava

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

        delegate().clear();
      }
    };
  }

  @Override
  public @Nullable Entry<K, V> firstEntry() {
    return delegate.firstEntry();
  }

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

  @Override
  public @Nullable Entry<K, V> floorEntry(K key) {
    return delegate.floorEntry(checkValid(key));
  }

  @Override
  public @Nullable K floorKey(K key) {

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

- Last Modified: Mon Mar 23 21:06:42 GMT 2026

- 7.4K bytes

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github.com/google/guava

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

    @Override
    public @Nullable Comparator<? super K> comparator() {
      return fromMap().comparator();
    }

    @Override
    @ParametricNullness
    public K firstKey() {
      return fromMap().firstKey();
    }

    @Override
    public SortedMap<K, V2> headMap(@ParametricNullness K toKey) {
      return transformEntries(fromMap().headMap(toKey), transformer);
    }

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

- Last Modified: Wed Apr 01 17:27:13 GMT 2026

- 157.6K bytes

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github.com/google/guava

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

    @Override
    public @Nullable Comparator<? super K> comparator() {
      return fromMap().comparator();
    }

    @Override
    @ParametricNullness
    public K firstKey() {
      return fromMap().firstKey();
    }

    @Override
    public SortedMap<K, V2> headMap(@ParametricNullness K toKey) {
      return transformEntries(fromMap().headMap(toKey), transformer);
    }

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

- Last Modified: Wed Apr 01 17:27:13 GMT 2026

- 163.4K bytes

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github.com/google/guava

guava-gwt/src-super/com/google/common/collect/super/com/google/common/collect/ImmutableSortedMap.java

  }

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

  @Override
  public @Nullable K firstKey() {
    return sortedDelegate.firstKey();
  }

  @Override
  public @Nullable K lastKey() {
    return sortedDelegate.lastKey();
  }

  @Nullable K higher(K k) {

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

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

- 16.6K bytes

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github.com/google/guava

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

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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