Java集合类源码（七）之Deque

package java.util;


public interface Deque extends Queue {
    
    void addFirst(E e);

    
    void addLast(E e);

    
    boolean offerFirst(E e);

    
    boolean offerLast(E e);

    
    E removeFirst();

    
    E removeLast();

    
    E pollFirst();

    
    E pollLast();

    
    E getFirst();

    
    E getLast();

    
    E peekFirst();

    
    E peekLast();

    
    boolean removeFirstOccurrence(Object o);

    
    boolean removeLastOccurrence(Object o);

    // *** Queue methods ***

    
    boolean add(E e);

    
    boolean offer(E e);

    
    E remove();

    
    E poll();

    
    E element();

    
    E peek();


    // *** Stack methods ***

    
    void push(E e);

    
    E pop();


    // *** Collection methods ***

    
    boolean remove(Object o);

    
    boolean contains(Object o);

    
    public int size();

    
    Iterator iterator();

    
    Iterator descendingIterator();

}