Interface Get<K,V>

  • Method Summary

    Modifier and Type
    Method
    Description
    boolean
    Tests for presence of a given key.
    boolean
    Tests for presence of a given value.
    Gets a set view of the mappings contained in this map.
    get(Object key)
    Gets a value at a given key.
    boolean
    Tests whether this instance contains any key-value mappings.
    Gets a view of the keys contained in this map.
    Remove a key-value mappings.
    int
    Gets the number of key-value mappings in this map.
    Gets a a collection view of the values contained in this map.
  • Method Details

    • containsKey

      boolean containsKey(Object key)
      Tests for presence of a given key.
      Parameters:
      key - key whose presence in this map is to be tested
      Returns:
      true if this map contains a mapping for the specified key
      See Also:
    • containsValue

      boolean containsValue(Object value)
      Tests for presence of a given value.
      Parameters:
      value - value whose presence in this map is to be tested
      Returns:
      true if this map maps one or more keys to the specified value
      See Also:
    • entrySet

      Gets a set view of the mappings contained in this map.
      Returns:
      a set view of the mappings contained in this map.
      See Also:
    • get

      V get(Object key)
      Gets a value at a given key.
      Parameters:
      key - the key whose associated value is to be returned
      Returns:
      the value to which the specified key is mapped, or null if this map contains no mapping for the key
      See Also:
    • isEmpty

      boolean isEmpty()
      Tests whether this instance contains any key-value mappings.
      Returns:
      true if this map contains no key-value mappings
      See Also:
    • keySet

      Gets a view of the keys contained in this map.
      Returns:
      a set view of the keys contained in this map
      See Also:
    • remove

      V remove(Object key)
      Remove a key-value mappings.
      Parameters:
      key - key whose mapping is to be removed from the map
      Returns:
      the previous value associated with key, or null if there was no mapping for key.
      See Also:
    • size

      int size()
      Gets the number of key-value mappings in this map.
      Returns:
      the number of key-value mappings in this map.
      See Also:
    • values

      Gets a a collection view of the values contained in this map.
      Returns:
      a collection view of the values contained in this map.
      See Also: