Here you can find the source of invokeMethod(Object obj, String methodName, Object... args)
Parameter | Description |
---|---|
obj | Object on which to invoke a method |
methodName | Method to invoke |
args | Method arguments |
public static void invokeMethod(Object obj, String methodName, Object... args)
//package com.java2s; /**/*from w w w . ja va 2 s . c om*/ * The MIT License * * Copyright (c) 2011 by Dustin R. Callaway * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ import java.lang.reflect.AccessibleObject; import java.lang.reflect.Method; public class Main { /** * Invokes a method (even private methods). * * @param obj Object on which to invoke a method * @param methodName Method to invoke * @param args Method arguments */ public static void invokeMethod(Object obj, String methodName, Object... args) { try { Class[] arglist = null; if (args != null) { arglist = new Class[args.length]; for (int i = 0; i < arglist.length; i++) { arglist[i] = args[i].getClass(); } } Method m = obj.getClass().getDeclaredMethod(methodName, arglist); AccessibleObject[] ao = { m }; AccessibleObject.setAccessible(ao, true); m.invoke(obj, args); } catch (Exception ex) { ex.printStackTrace(); } } }