319      * If the attribute values are unordered,
 320      * this method sets the value that happens to be at that index
 321      * to {@code attrVal}, unless {@code attrVal} is already one of the values.
 322      * In that case, {@code IllegalStateException} is thrown.
 323      *
 324      * @param ix The index of the value in the ordered list of attribute values.
 325      * {@code 0 <= ix < size()}.
 326      * @param attrVal The possibly null attribute value to use.
 327      * If null, 'null' replaces the old value.
 328      * @return The possibly null attribute value at index ix that was replaced.
 329      *   Null if the attribute value was null.
 330      * @exception IndexOutOfBoundsException If {@code ix} is outside the specified range.
 331      * @exception IllegalStateException If {@code attrVal} already exists and the
 332      *    attribute values are unordered.
 333      */
 334     Object set(int ix, Object attrVal);
 335 
 336     /**
 337      * Use serialVersionUID from JNDI 1.1.1 for interoperability.
 338      */

 339     static final long serialVersionUID = 8707690322213556804L;
 340 }

 319      * If the attribute values are unordered,
 320      * this method sets the value that happens to be at that index
 321      * to {@code attrVal}, unless {@code attrVal} is already one of the values.
 322      * In that case, {@code IllegalStateException} is thrown.
 323      *
 324      * @param ix The index of the value in the ordered list of attribute values.
 325      * {@code 0 <= ix < size()}.
 326      * @param attrVal The possibly null attribute value to use.
 327      * If null, 'null' replaces the old value.
 328      * @return The possibly null attribute value at index ix that was replaced.
 329      *   Null if the attribute value was null.
 330      * @exception IndexOutOfBoundsException If {@code ix} is outside the specified range.
 331      * @exception IllegalStateException If {@code attrVal} already exists and the
 332      *    attribute values are unordered.
 333      */
 334     Object set(int ix, Object attrVal);
 335 
 336     /**
 337      * Use serialVersionUID from JNDI 1.1.1 for interoperability.
 338      */
 339     @SuppressWarnings("serial") // serialVersionUID in an interface is ineffectual
 340     static final long serialVersionUID = 8707690322213556804L;
 341 }