Method size

lib/java/util/AbstractCollection.java:337–337

Returns a count of how many objects this Collection contains. In this class this method is declared abstract and has to be implemented by concrete Collection implementations. @return how many objects this Collection contains, or Integer.MAX_VALUE if there

()

     *         {@code Collection}.
     */
    public abstract int size();

    public Object[] toArray() {
        int size = size(), index = 0;