package stacks;

import java.util.Enumeration;

/**
 * A stack interface
 *
 * A stack manages its objects in a Last In, First Out (LIFO) order. 
 *
 * @author Alan L. Cox
 * @since 03/15/01
 */
public interface IStack {

    /**
     * Adds a new object to the stack.
     */
    public void push(Object data);

    /**
     * Removes and returns the newest object from the stack.
     */
    public Object pop();

    /**
     * Returns an Enumeration of the stack.
     */
    public Enumeration enumeration();
}