All Implemented Interfaces:

Serializable, Cloneable, Iterable<E>, Collection<E>, List<E>, RandomAccess

public class Stack<E>
extends Vector<E>

   
   Deque<Integer> stack = new ArrayDeque<Integer>();

Since:

1.0

See Also:

Serialized Form

• Field Summary

• Constructor Summary

  Constructors 

  Constructor	Description
  Stack()	Creates an empty Stack.

• Method Summary

  Modifier and Type	Method	Description
  boolean	empty()	Tests if this stack is empty.
  E	peek()	Looks at the object at the top of this stack without removing it from the stack.
  E	pop()	Removes the object at the top of this stack and returns that object as the value of this function.
  E	push​(E item)	Pushes an item onto the top of this stack.
  int	search​(Object o)	Returns the 1-based position where an object is on this stack.

  Methods declared in class java.util.Vector

  add, add, addAll, addAll, addElement, capacity, clear, clone, contains, containsAll, copyInto, elementAt, elements, ensureCapacity, equals, firstElement, forEach, get, hashCode, indexOf, indexOf, insertElementAt, isEmpty, iterator, lastElement, lastIndexOf, lastIndexOf, listIterator, listIterator, remove, remove, removeAll, removeAllElements, removeElement, removeElementAt, removeIf, removeRange, replaceAll, retainAll, set, setElementAt, setSize, size, spliterator, subList, toArray, toArray, toString, trimToSize

  Methods declared in interface java.util.List

  sort

• Constructor Details

  • Stack

    public Stack()

    Creates an empty Stack.

• Method Details

  • push

    public E push​(E item)

    Pushes an item onto the top of this stack. This has exactly the same effect as:

     addElement(item)

    Parameters:

    item - the item to be pushed onto this stack.

    Returns:

    the item argument.

    See Also:

    Vector.addElement(E)

  • pop

    public E pop()

    Removes the object at the top of this stack and returns that object as the value of this function.

    Returns:

    The object at the top of this stack (the last item of the Vector object).

    Throws:

    EmptyStackException - if this stack is empty.

  • peek

    public E peek()

    Looks at the object at the top of this stack without removing it from the stack.

    Returns:

    the object at the top of this stack (the last item of the Vector object).

    Throws:

    EmptyStackException - if this stack is empty.

  • empty

    public boolean empty()

    Tests if this stack is empty.

    Returns:

    true if and only if this stack contains no items; false otherwise.

  • search

    public int search​(Object o)

    Returns the 1-based position where an object is on this stack. If the object o occurs as an item in this stack, this method returns the distance from the top of the stack of the occurrence nearest the top of the stack; the topmost item on the stack is considered to be at distance 1. The equals method is used to compare o to the items in this stack.

    Parameters:

    o - the desired object.

    Returns:

    the 1-based position from the top of the stack where the object is located; the return value -1 indicates that the object is not on the stack.