forgetnullvalueslinkedhashmap.java

来自「JSP 的一个wiki 系统」· Java 代码 · 共 24 行

package com.ecyrd.jspwiki.htmltowiki;

import java.util.LinkedHashMap;

/**
 * A LinkedHashMap that does not put null values into the map.
 * 
 * @author Sebastian Baltes ([e-mail])
 */
public class ForgetNullValuesLinkedHashMap extends LinkedHashMap
{
    public Object put( Object key, Object value )
    {
        if( value != null )
        {
            return super.put( key, value );
        }
        else
        {
            return null;
        }
    }
}