Package jade.util.leap

Interface Map

  • All Known Implementing Classes:
    DataStore, HashCache, HashMap
    public interface Map
    The LEAP (environment-dependent) version of the &qote;java.util.Map&qote; interface. This interface appears to be exactly the same in J2SE, PJAVA and MIDP. The internal implementation is different in the three cases however.
    Version:
    1.0, 23/10/00
    Author:
    Nicolas Lhuillier
    See Also:
    (J2SE)

    • Method Summary

      All Methods Instance Methods Abstract Methods 
      Modifier and Type Method Description
      void clear()
      Remove all mappings from this map.
      boolean containsKey​(Object key)
      Returns true if this map contains a mapping for the specified key.
      Object get​(Object key)
      Returns the value to which this map maps the specified key.
      boolean isEmpty()
      Returns true if this map contains no key-value mappings.
      Set keySet()
      Returns a set view of the keys contained in this map.
      Object put​(Object key, Object value)
      Associates the specified value with the specified key in this map (optional operation).
      Object remove​(Object key)
      Removes the mapping for this key from this map if present (optional operation).
      int size()
      Returns the number of mappings in this map.
      Collection values()
      Returns a Collection view of the values contained in this map.

    • Method Detail

      • isEmpty

        boolean isEmpty()
        Returns true if this map contains no key-value mappings.
        Returns:
        true if this map contains no key-value mappings.
        See Also:
        Map

      • remove

        Object remove​(Object key)
        Removes the mapping for this key from this map if present (optional operation).
        Parameters:
        key - key whose mapping is to be removed from the map.
        Returns:
        previous value associated with specified key, or null if there was no mapping for key.
        See Also:
        Map

      • keySet

        Set keySet()
        Returns a set view of the keys contained in this map.
        Returns:
        a set view of the keys contained in this map.
        See Also:
        Map

      • values

        Collection values()
        Returns a Collection view of the values contained in this map.
        Returns:
        the Collection of elements contained in this map.
        See Also:
        Map

      • put

        Object put​(Object key,
           Object value)
        Associates the specified value with the specified key in this map (optional operation).
        Parameters:
        key - key with which the specified value is to be associated.
        value - value to be associated with the specified key.
        Returns:
        previous value associated with specified key, or null if there was no mapping for key.
        See Also:
        Map

      • containsKey

        boolean containsKey​(Object key)
        Returns true if this map contains a mapping for the specified 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:
        Map

      • get

        Object get​(Object key)
        Returns the value to which this map maps the specified key. Returns null if the map contains no mapping for this key.
        Parameters:
        key - key whose associated value is to be returned.
        Returns:
        the value to which this map maps the specified key, or null if the map contains no mapping for this key.
        See Also:
        Map

      • size

        int size()
        Returns the number of mappings in this map.
        See Also:
        Map

      • clear

        void clear()
        Remove all mappings from this map.
        See Also:
        Map