vectorset.java

一款即时通讯软件

package edu.ou.kmi.buddyspace.utils;

import java.util.*;

/**
 *
 * <p>Title: VectorSet</p>
 *
 * <p>Description: A set that behaves like HashSet except that entries don't
 * get jumbled.</p>
 *
 * <p>Copyright: Copyright (c) 2005</p>
 *
 * <p>Company: ICONOGRAPHICS LIMITED</p>
 *
 * @author Chris Denham
 * @version 1.0
 */

public class VectorSet extends Vector
{
    public boolean add(Object o)
    {
        if (contains(o)) return true;
        return super.add(o);
    }

    public boolean addAll(Collection c) {
       boolean modified = false;
       Iterator e = c.iterator();
       while (e.hasNext()) {
           if(add(e.next()))
               modified = true;
       }
       return modified;
   }

}