viewutils.java

来自「Hibernate (著译者: 陈天河等)项目开发宝典本书以Hibernate为」· Java 代码 · 共 59 行

package cn.hxex.library.view.util;

import java.util.ArrayList;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;

public class ViewUtils
{
	/**
	 * Convert a list to a set.
	 * 
	 * @param orig
	 *            the list to be converted
	 * @return the set converted from the list
	 */
	public static Set convertToSet(List orig)
	{
		Set result = new HashSet();

		if (orig != null)
		{
			Iterator ite = orig.iterator();

			while (ite.hasNext())
			{
				result.add(ite.next());
			}
		}

		return result;
	}

	/**
	 * Convert a set to a list.
	 * 
	 * @param orig
	 *            the set to be converted
	 * @return the list converted from the set
	 */
	public static List convertToList(Set orig)
	{
		List result = new ArrayList();

		if (orig != null)
		{
			Iterator ite = orig.iterator();

			while (ite.hasNext())
			{
				result.add(ite.next());
			}
		}

		return result;
	}
}