Class ReverseComparatorWithComparator

lib/java/util/Collections.java:209–235

    }

    private static final class ReverseComparatorWithComparator<T> implements
            Comparator<T>, Serializable {
        private static final long serialVersionUID = 4374092139857L;

        private final Comparator<T> comparator;

        ReverseComparatorWithComparator(Comparator<T> comparator) {
            super();
            this.comparator = comparator;
        }

        public int compare(T o1, T o2) {
            return comparator.compare(o2, o1);
        }

        @Override
        public boolean equals(Object o) {
            return o instanceof ReverseComparatorWithComparator
                    && ((ReverseComparatorWithComparator) o).comparator
                            .equals(comparator);
        }

        @Override
        public int hashCode() {
            return ~comparator.hashCode();
        }
    }

    private static final class SingletonSet<E> extends AbstractSet<E> implements
            Serializable {