通过调用与参数匹配的构造函数来创建obj类的对象。

/** from N o w J a v a . c o m - 时代Java**/

/**

 * Copyright (c) 2011 eXtensible Catalog Organization

 *

 * This program is free software; you can redistribute it and/or modify it

 * under the terms of the MIT/X11 license. The text of the license can be

 * found at http://www.opensource.org/licenses/mit-license.php.

 */

import org.apache.log4j.Logger;

import java.lang.reflect.Constructor;

import java.lang.reflect.Field;

import java.lang.reflect.InvocationTargetException;

import java.lang.reflect.Method;

import java.util.Collection;


public class Main{

    /**

     * Create an object of the objClass by calling the constructor that matches the parameters.

     * @param objClass

     * @param parameters

     * @return

     */

    public static Object createObject(Class objClass, Object... parameters)

            throws ToolkitException {


        Object obj;

        try {


            Class[] parmTypes;

            if (parameters != null) {

            /** 
             来自 nowjava - 时代Java**/

                parmTypes = new Class[parameters.length];

                for (int index = 0; index < parameters.length; ++index) {


                    parmTypes[index] = parameters[index].getClass();


                    // Strip quote marks from around strings

                    // Note: this would change the type of objects that are sub-classes of String into String,

                    // but as String is a final class there can't actually be any sub-types of String,

                    // so this is safe to do.

                    if (parameters[index] instanceof String) {


                        String temp = (String) parameters[index];

                        if (temp.startsWith("\"") && temp.endsWith("\"")) {


                            parameters[index] = temp.substring(1,

                                    temp.length() - 1);


                        }

                    }


                }


            } else {


                parmTypes = new Class[0];


            }


            Constructor ctor = objClass.getConstructor(parmTypes);

            obj = ctor.newInstance(parameters);


        } catch (InstantiationException e) {


            throw new ToolkitException(

                    "Exception constructing an instance of " + objClass, e);


        } catch (IllegalAccessException e) {


            throw new ToolkitException(

                    "Exception constructing an instance of " + objC