Method push

vm/JavaAPI/src/java/util/Deque.java:238–238

Pushes the element to the deque(at the head of the deque), just same as addFirst(E). @param e the element @throws IllegalStateException if it can not add now due to size limit @throws ClassCastException if the class of element can not be added into this deque @thr

(E e)

     *             if the element can not be added due to some property.
     */
    void push(E e);

    /**
     * Pops the head element of the deque, just same as removeFirst().