调用构造函数。

/*

 * NOTE: This is added by intellij IDE. Disregard this message if there is another copyright later in the file.

 * Copyright (C) 2014-2015  Will (n9Mtq4) Bresnahan

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

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation, either version 3 of the License, or

 * (at your option) any later version

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details

 * You should have received a copy of the GNU General Public License

 * along with this program.  If not, see <http://www.gnu.org/licenses/>.

 */

//package com.nowjava;
//n o w j a v a . c o m - 时  代  Java 提 供

import java.lang.reflect.Constructor;


public class Main {

    /**

     * Call constructor.

     *

     * @param clazz       the class

     * @param classParams the class params

     * @param params      the params

     * @return the object

     */

    public static <E> E callConstructor(Class clazz, Class[] classParams,

            Object[] params) {

        try {

            Constructor c = clazz.getDeclaredConstructor(classParams);

            c.setAccessible(true);

            return (E) c.newInstance(params);

        } catch (Exception e) {

            e.printStackTrace();

            return null;

        }

    }


    /**

     * Call constructor.

     *

     * @param clazz  the class

     * @param params the params

     * @return the object

     */
     /*来自 
      时 代 J a v a 公 众 号 - nowjava.com*/

    public static <E> E callConstructor(Class clazz, Object... params) {

        return callConstructor(clazz, getClassParams(params), params);

    }


    /**

     * Get class params.

     *

     * @param params the params

     * @return the class [ ]

     */