stack.java

Java Communicating Agents是一个用于开发网络反应式信息agent的框架

/*
 * $Source: /home/data/cvsroot/src/jacomma/util/Stack.java,v $
 * $Revision: 1.3 $
 * $Date: 2000/10/28 20:09:08 $
 *
 * This file is part of the jacomma framework
 * Copyright (c) 2000 	Dimitrios Vyzovitis
 *			mailto:[e-mail]
 *			
 *
 *			
 *			
 *			
 *
 *	This library is free software; you can redistribute it and/or modify
 *	it under the terms of the GNU Library General Public License as published by
 *	the Free Software Foundation; either version 2 of the License, or
 *	(at your option) any later version.
 *
 *	This library is distributed in the hope that it will be useful,
 *	but WITHOUT ANY WARRANTY; without even the implied warranty of
 *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *	GNU Library General Public License for more details.
 *
 *	You should have received a copy of the GNU Library General Public License
 *	along with this library; if not, write to the Free Software
 *	Foundation, Inc., 59 Temple Place, Suite 330, 
 *	Boston, MA  02111-1307  USA
 */

package jacomma.util;

/**
 * TBA
 **/
public class Stack {
	
	java.util.List stack_;

	public Stack() {
		this( 10 );
	}

	public Stack( int ic ) {
		stack_ = new java.util.ArrayList( ic );
	}

	public boolean isEmpty() {
		return stack_.isEmpty();
	}
	
	public Object pop() {
		return stack_.remove( 0 );
	}
	
	public void push( Object obj ) {
		if ( obj != null )
			stack_.add( 0, obj );
	}

	public void push( Object[] ar ) {
		for( int i = 0; i < ar.length; i++ )
			push( ar[i] );
	}
	
	public void push_rv( Object[] ar ) {
		for( int i = ar.length - 1; i > -1; i-- )
			push( ar[i] );
	}

}