stack.java

来自「SRI international 发布的OAA框架软件」· Java 代码 · 共 24 行

package antlr_oaa.collections;

/* ANTLR Translator Generator
 * Project led by Terence Parr at http://www.jGuru.com
 * Software rights: http://www.antlr.org/RIGHTS.html
 *
 * $Id: Stack.java,v 1.1 2002/11/08 17:37:22 agno Exp $
 */

import java.util.NoSuchElementException;

/** A simple stack definition; restrictive in that you cannot
 * access arbitrary stack elements.
 *
 * @author Terence Parr
 * <a href=http://www.MageLang.com>MageLang Institute</a>
 */
public interface Stack {
	public int height();
	public Object pop() throws NoSuchElementException;
	public void push(Object o);
	public Object top() throws NoSuchElementException;
}