/** * Returns <tt>true</tt> if this map contains a mapping for the specified * key. * * @param key key whose presence in this map is to be tested * @return <tt>true</tt> if this map contains a mapping for the specified key * @throws ClassCastException if the specified key cannot be compared * with the keys currently in the map * @throws NullPointerException if the specified key is null */ public boolean containsKey(Object key) { return doGet(key) != null; }
/** * Returns <tt>true</tt> if this map contains a mapping for the specified * key. * * @param key key whose presence in this map is to be tested * @return <tt>true</tt> if this map contains a mapping for the specified key * @throws ClassCastException if the specified key cannot be compared * with the keys currently in the map * @throws NullPointerException if the specified key is null */ public boolean containsKey(Object key) { return doGet(key) != null; }
/** * Returns <tt>true</tt> if this map contains a mapping for the specified * key. * * @param key key whose presence in this map is to be tested * @return <tt>true</tt> if this map contains a mapping for the specified key * @throws ClassCastException if the specified key cannot be compared * with the keys currently in the map * @throws NullPointerException if the specified key is null */ public boolean containsKey(Object key) { return doGet(key) != null; }
/** * Returns the value to which the specified key is mapped, * or {@code null} if this map contains no mapping for the key. * * <p>More formally, if this map contains a mapping from a key * {@code k} to a value {@code v} such that {@code key} compares * equal to {@code k} according to the map's ordering, then this * method returns {@code v}; otherwise it returns {@code null}. * (There can be at most one such mapping.) * * @throws ClassCastException if the specified key cannot be compared * with the keys currently in the map * @throws NullPointerException if the specified key is null */ public Object get(Object key) { return doGet(key); }
/** * Returns the value to which the specified key is mapped, * or {@code null} if this map contains no mapping for the key. * * <p>More formally, if this map contains a mapping from a key * {@code k} to a value {@code v} such that {@code key} compares * equal to {@code k} according to the map's ordering, then this * method returns {@code v}; otherwise it returns {@code null}. * (There can be at most one such mapping.) * * @throws ClassCastException if the specified key cannot be compared * with the keys currently in the map * @throws NullPointerException if the specified key is null */ public Object get(Object key) { return doGet(key); }
/** * Returns the value to which the specified key is mapped, * or {@code null} if this map contains no mapping for the key. * * <p>More formally, if this map contains a mapping from a key * {@code k} to a value {@code v} such that {@code key} compares * equal to {@code k} according to the map's ordering, then this * method returns {@code v}; otherwise it returns {@code null}. * (There can be at most one such mapping.) * * @throws ClassCastException if the specified key cannot be compared * with the keys currently in the map * @throws NullPointerException if the specified key is null */ public Object get(Object key) { return doGet(key); }