/** * Associates the specified value with the specified key in this map. * If the map previously contained a mapping for this key, the old * value is replaced. * * @param key the key with which the specified value is to be associated * @param value the value to be associated with the specified key * * @return the previous value associated with specified key, or * <tt>null</tt> if there was no mapping for key. (A <tt>null</tt> * return can also indicate that the map previously associated * <tt>null</tt> with the specified key.) * @throws NullPointerException if the specified key is null */ public V put(K key, V value) { typeCheck(key); int index = key.ordinal(); Object oldValue = vals[index]; vals[index] = maskNull(value); if (oldValue == null) size++; return unmaskNull(oldValue); }
/** * Associates the specified value with the specified key in this map. * If the map previously contained a mapping for this key, the old * value is replaced. * * @param key the key with which the specified value is to be associated * @param value the value to be associated with the specified key * * @return the previous value associated with specified key, or * <tt>null</tt> if there was no mapping for key. (A <tt>null</tt> * return can also indicate that the map previously associated * <tt>null</tt> with the specified key.) * @throws NullPointerException if the specified key is null */ public V put(K key, V value) { typeCheck(key); int index = key.ordinal(); Object oldValue = vals[index]; vals[index] = maskNull(value); if (oldValue == null) size++; return unmaskNull(oldValue); }