mapfactory.java

来自「java 的源代码」· Java 代码 · 共 40 行

package com.reddragon2046.base.utilities.data.util;

import java.util.Map;

public class MapFactory
{

    public MapFactory()
    {
    }

    public static Map create(Class mapClass)
    {
        try
        {
            return (Map)mapClass.newInstance();
        }
        catch(Exception e)
        {
            throw new RuntimeException("error creating Map of type " + mapClass + ":" + e.getLocalizedMessage());
        }
    }

    public static Map create(Class mapClass, Object values[])
    {
        Map map = create(mapClass);
        for(int i = 0; i < values.length; i++)
            map.put(new Integer(i), values[i]);

        return map;
    }

    public static Map createCopy(Map m)
    {
        Map copy = create(m.getClass());
        copy.putAll(m);
        return copy;
    }
}