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Java 输出班级信息
输出班级信息
实例源码：
源代码：
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/*3
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* JBoss, Home of Professional Open Source.5
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* Copyright 2013, Red Hat, Inc., and individual contributors7
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* as indicated by the @author tags. See the copyright.txt file in the9
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* distribution for a full listing of individual contributors.11
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*13
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* This is free software; you can redistribute it and/or modify it15
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* under the terms of the GNU Lesser General Public License as17
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* published by the Free Software Foundation; either version 2.1 of19
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* the License, or (at your option) any later version.21
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*23
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* This software is distributed in the hope that it will be useful,25
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* but WITHOUT ANY WARRANTY; without even the implied warranty of27
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU29
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* Lesser General Public License for more details.31
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*33
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* You should have received a copy of the GNU Lesser General Public35
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* License along with this software; if not, write to the Free37
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* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA39
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* 02110-1301 USA, or see the FSF site: http://www.fsf.org.41
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*/43
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//package com.nowjava;45
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import java.lang.reflect.Constructor;47
/*来自 48
时代Java公众号 - N o w J a v a . c o m*/49
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import java.lang.reflect.Field;51
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import java.lang.reflect.Method;53
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public class Main {56
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public static void main(String[] argv) throws Exception {58
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Class clazz = String.class;60
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outputClass(clazz);62
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}64
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public static void outputClass(Class<?> clazz) {67
/* 68
*来 自69
时 代 J a v a 公 众 号 - N o w J a v a . c o m70
*/71
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System.out.println("****** Class " + clazz + " "73
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+ clazz.getClassLoader() + " *******");75
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System.out.println("\nFields:");77
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Field[] fields = clazz.getDeclaredFields();79
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for (Field field : fields) {81
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System.out.println(" --" + field.getName() + "-"83
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+ field.getType().getName() + " ("85
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+ field.getType().getClassLoader() + ")");87
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}89
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System.out.println("\nConstructors");91
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Constructor<?>[] ctors = clazz.getDeclaredConstructors();93
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for (Constructor<?> ctor : ctors) {95
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System.out.println(" --constructor [");97
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for (Class<?> param : ctor.getParameterTypes()) {99
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System.out.println(" "101
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+ param.getClass().getName() + " ("103
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+ param.getClass().getClassLoader() + ")");105
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}107
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System.out.println(" ]");109
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}111
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System.out.println("\nMethods:");113
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Method[] methods = clazz.getDeclaredMethods();115
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for (Method method : methods) {117
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