Method size

lib/java/util/HashSet.java:178–181

Returns the number of elements in this HashSet. @return the number of elements in this HashSet.

()

     * @return the number of elements in this {@code HashSet}.
     */
    @Override
    public int size() {
        return backingMap.size();
    }

//    private void writeObject(ObjectOutputStream stream) throws IOException {
//        stream.defaultWriteObject();