辅导java BagInterface java辅导讲解、辅导java程序、辅导讲解java报告

日期：2018-09-18 03:01

/**

*/

public interface BagInterface<T>

{

   /** Gets the current number of entries in this bag.

    @return  The integer number of entries currently in the bag. */

   public int getCurrentSize();

   /** Retrieves all entries that are in this bag.

    @return  A newly allocated array of all the entries in the bag.

    Note: If the bag is empty, the returned array is empty. */

   public T[] toArray();

/** Adds a new entry to the head of this bag.

   @param newEntry  The object to be added as a new entry.

   @return  True if the addition is successful, or false if not. */

public boolean addToHead(T newEntry);

   /** Adds a new entry to the tail of this bag.

    @param newEntry  The object to be added as a new entry.

    @return  True if the addition is successful, or false if not. */

   public boolean addToTail(T newEntry);

   /** Removes one unspecified entry from the head of this bag, if possible.

      @return  Either the removed entry, if the removal.

               was successful, or null. */

public T removeHead();

   /** Removes one entry from the tail of this bag, if possible.

    @return  Either the removed entry, if the removal.

    was successful, or null. */

   public T removeTail();

} // end BagInterface