输出班级信息

/*

 * JBoss, Home of Professional Open Source.

 * Copyright 2013, Red Hat, Inc., and individual contributors

 * as indicated by the @author tags. See the copyright.txt file in the

 * distribution for a full listing of individual contributors.

 *

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

 * under the terms of the GNU Lesser General Public License as

 * published by the Free Software Foundation; either version 2.1 of

 * the License, or (at your option) any later version.

 *

 * This software 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

 * Lesser General Public License for more details.

 *

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

 * License along with this software; if not, write to the Free

 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA

 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.

 */

//package com.nowjava;

import java.lang.reflect.Constructor;
/*来自 
 时代Java公众号 - N o w J a  v a . c o m*/

import java.lang.reflect.Field;

import java.lang.reflect.Method;


public class Main {

    public static void main(String[] argv) throws Exception {

        Class clazz = String.class;

        outputClass(clazz);

    }


    public static void outputClass(Class<?> clazz) {
    /* 
    *来 自
     时 代 J a v a 公 众 号 - N o w J a v  a . c o m
    */

        System.out.println("****** Class " + clazz + " "

                + clazz.getClassLoader() + " *******");

        System.out.println("\nFields:");

        Field[] fields = clazz.getDeclaredFields();

        for (Field field : fields) {

            System.out.println("    --" + field.getName() + "-"

                    + field.getType().getName() + " ("

                    + field.getType().getClassLoader() + ")");

        }

        System.out.println("\nConstructors");

        Constructor<?>[] ctors = clazz.getDeclaredConstructors();

        for (Constructor<?> ctor : ctors) {

            System.out.println("    --constructor [");

            for (Class<?> param : ctor.getParameterTypes()) {

                System.out.println("          "

                        + param.getClass().getName() + " ("

                        + param.getClass().getClassLoader() + ")");

            }

            System.out.println("      ]");

        }

        System.out.println("\nMethods:");

        Method[] methods = clazz.getDeclaredMethods();

        for (Method method : methods) {

            System.out.println("      " + method.getName() + " [");