src/java.base/share/classes/java/util/Set.java

rev 47862 : imported patch immu0

*** 446,456 ****
       * @return an empty {@code Set}
       *
       * @since 9
       */
      static <E> Set<E> of() {
!         return ImmutableCollections.Set0.instance();
      }
  
      /**
       * Returns an immutable set containing one element.
       * See <a href="#immutable">Immutable Set Static Factory Methods</a> for details.
--- 446,456 ----
       * @return an empty {@code Set}
       *
       * @since 9
       */
      static <E> Set<E> of() {
!         return ImmutableCollections.emptySet();
      }
  
      /**
       * Returns an immutable set containing one element.
       * See <a href="#immutable">Immutable Set Static Factory Methods</a> for details.
*** 478,488 ****
       * @throws NullPointerException if an element is {@code null}
       *
       * @since 9
       */
      static <E> Set<E> of(E e1, E e2) {
!         return new ImmutableCollections.Set2<>(e1, e2);
      }
  
      /**
       * Returns an immutable set containing three elements.
       * See <a href="#immutable">Immutable Set Static Factory Methods</a> for details.
--- 478,488 ----
       * @throws NullPointerException if an element is {@code null}
       *
       * @since 9
       */
      static <E> Set<E> of(E e1, E e2) {
!         return new ImmutableCollections.SetN<>(e1, e2);
      }
  
      /**
       * Returns an immutable set containing three elements.
       * See <a href="#immutable">Immutable Set Static Factory Methods</a> for details.
*** 689,703 ****
      @SafeVarargs
      @SuppressWarnings("varargs")
      static <E> Set<E> of(E... elements) {
          switch (elements.length) { // implicit null check of elements
              case 0:
!                 return ImmutableCollections.Set0.instance();
              case 1:
                  return new ImmutableCollections.Set1<>(elements[0]);
-             case 2:
-                 return new ImmutableCollections.Set2<>(elements[0], elements[1]);
              default:
                  return new ImmutableCollections.SetN<>(elements);
          }
      }
  }
--- 689,701 ----
      @SafeVarargs
      @SuppressWarnings("varargs")
      static <E> Set<E> of(E... elements) {
          switch (elements.length) { // implicit null check of elements
              case 0:
!                 return ImmutableCollections.emptySet();
              case 1:
                  return new ImmutableCollections.Set1<>(elements[0]);
              default:
                  return new ImmutableCollections.SetN<>(elements);
          }
      }
  }