Class UnsyncStack<E>

All Implemented Interfaces:
Serializable, Cloneable, Iterable<E>, Collection<E>, List<E>, RandomAccess, SequencedCollection<E>

public class UnsyncStack<E> extends ArrayList<E>
Implements unsynchronized stack (contrary to default Java Stack, this one is based on ArrayList). Usage is the same as the java.util.Stack.
See Also:
  • Field Details

    • serialVersionUID

      private static final long serialVersionUID
      Generated automatically.
      See Also:
  • Constructor Details

    • UnsyncStack

      UnsyncStack()
  • Method Details

    • push

      public E push(E item)
      Pushes an item onto the top of this stack. This has exactly the same effect as: add(item)
      Parameters:
      item - the item to be pushed onto this stack.
      Returns:
      the item argument.
      See Also:
      • ArrayList.add(E, java.lang.Object[], int)
    • 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 ArrayList 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 ArrayList 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.