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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)

Registered: Fri Dec 26 12:43:10 UTC 2025

- Last Modified: Mon Sep 22 20:54:16 UTC 2025

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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) {

Registered: Fri Dec 26 12:43:10 UTC 2025

- Last Modified: Thu Feb 13 17:34:21 UTC 2025

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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)

Registered: Fri Dec 26 12:43:10 UTC 2025

- Last Modified: Mon Sep 22 20:54:16 UTC 2025

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github.com/google/guava

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

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

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

  @Override
  public SortedMap<K, V> headMap(@ParametricNullness K toKey) {
    return delegate().headMap(toKey);
  }

  @Override
  @ParametricNullness
  public K lastKey() {

Registered: Fri Dec 26 12:43:10 UTC 2025

- Last Modified: Wed Feb 12 16:28:01 UTC 2025

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github.com/google/guava

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

    }

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

    @Override
    public R firstKey() {
      return sortedBackingMap().firstKey();
    }

    @Override
    public R lastKey() {
      return sortedBackingMap().lastKey();
    }

    @Override
    public SortedMap<R, Map<C, V>> headMap(R toKey) {

Registered: Fri Dec 26 12:43:10 UTC 2025

- Last Modified: Fri Jul 18 15:05:43 UTC 2025

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github.com/google/guava

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

    }

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

    @Override
    public R firstKey() {
      return sortedBackingMap().firstKey();
    }

    @Override
    public R lastKey() {
      return sortedBackingMap().lastKey();
    }

    @Override
    public SortedMap<R, Map<C, V>> headMap(R toKey) {

Registered: Fri Dec 26 12:43:10 UTC 2025

- Last Modified: Fri Jul 18 15:05:43 UTC 2025

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github.com/google/guava

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

  }

  @Override
  public @Nullable Entry<K, V> pollLastEntry() {
    return Iterators.pollNext(descendingEntryIterator());
  }

  @Override
  @ParametricNullness
  public K firstKey() {
    Entry<K, V> entry = firstEntry();
    if (entry == null) {
      throw new NoSuchElementException();
    } else {
      return entry.getKey();
    }
  }

  @Override
  @ParametricNullness

Registered: Fri Dec 26 12:43:10 UTC 2025

- Last Modified: Sun Dec 22 03:38:46 UTC 2024

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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) {

Registered: Fri Dec 26 12:43:10 UTC 2025

- Last Modified: Thu Feb 13 17:34:21 UTC 2025

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github.com/google/guava

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

  }

  @Override
  public @Nullable Entry<K, V> pollLastEntry() {
    return Iterators.pollNext(descendingEntryIterator());
  }

  @Override
  @ParametricNullness
  public K firstKey() {
    Entry<K, V> entry = firstEntry();
    if (entry == null) {
      throw new NoSuchElementException();
    } else {
      return entry.getKey();
    }
  }

  @Override
  @ParametricNullness

Registered: Fri Dec 26 12:43:10 UTC 2025

- Last Modified: Sun Dec 22 03:38:46 UTC 2024

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github.com/google/guava

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

      return new StandardNavigableKeySet();
    }

    @Override
    public NavigableSet<K> descendingKeySet() {
      return standardDescendingKeySet();
    }

    @Override
    public K firstKey() {
      return standardFirstKey();
    }

    @Override
    public SortedMap<K, V> headMap(K toKey) {
      return standardHeadMap(toKey);
    }

    @Override
    public K lastKey() {

Registered: Fri Dec 26 12:43:10 UTC 2025

- Last Modified: Tue Dec 16 03:23:31 UTC 2025

- 9.7K bytes

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