Java Method Call invoke(Object target, String name, Class[] params, Object[] args)

Description

Returns the result of invoking the method name on target with parameters params declared in the target's class using arguments args.

License

Mozilla Public License

Parameter

Parameter	Description
target	target Object.
name	name of the method.
params	array of Class of parameters of the method.
args	array of Object of arguments to the method.

Return

the result of invoking the method.

Declaration

public static Object invoke(Object target, String name, Class[] params, Object[] args) 

Method Source Code

//package com.java2s;
/* -*- Mode: JDE; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 *
 * This file is part of the debugger and core tools for the AspectJ(tm)
 * programming language; see http://aspectj.org
 *
 * The contents of this file are subject to the Mozilla Public License
 * Version 1.1 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * either http://www.mozilla.org/MPL/ or http://aspectj.org/MPL/.
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License./*from www .j  av  a 2s. c  om*/
 *
 * The Original Code is AspectJ.
 *
 * The Initial Developer of the Original Code is Xerox Corporation. Portions
 * created by Xerox Corporation are Copyright (C) 1999-2002 Xerox Corporation.
 * All Rights Reserved.
 */

public class Main {
    /**
     * Returns the result of invoking the method <code>name</code>
     * on <code>target</code> with parameters <code>params</code>
     * declared in the <code>target</code>'s class using arguments
     * <code>args</code>.
     *
     * @param target target Object.
     * @param name   name of the method.
     * @param params array of Class of parameters of the method.
     * @param args   array of Object of arguments to the method.
     * @return       the result of invoking the method.
     * @see          #invoke(Class,Object,String,Class[],Object[])
     */
    public static Object invoke(Object target, String name, Class[] params, Object[] args) {
        return invoke(target.getClass(), target, name, params, args);
    }

    /**
     * Returns the result of invoking the method <code>name</code>
     * on <code>target</code> with parameters <code>params</code>
     * declared in the <code>type</code> using arguments
     * <code>args</code>.
     * This method handles any errors that arise in doing so.
     *
     * @param type   type in which the method is declared.
     * @param target target Object -- null for static methods.
     * @param name   name of the method.
     * @param params array of Class of parameters of the method.
     * @param args   array of Object of arguments to the method.
     * @return       the result of invoking the method.
     */
    public static Object invoke(Class type, Object target, String name, Class[] params, Object[] args) {
        try {
            java.lang.reflect.Method method = type.getDeclaredMethod(name, params);
            method.setAccessible(true);
            return method.invoke(target, args);
        } catch (Exception e) {
            e.printStackTrace(); //TODO
        }
        return null;
    }
}

Related

1. invoke(Object target, Class clazz, String method)
2. invoke(Object target, Method method)
3. invoke(Object target, String methodName)
4. invoke(Object target, String methodName, Object... args)
5. invoke(Object target, String methodName, Object[] args)
6. invoke(Object targetObject, String method, Class[] paramTypes, Object[] paramValues)
7. invoke(Object targetObject, String methodName, Object... params)
8. invoke(Object thisObject, Method method)
9. invoke(ObjectName objectName, Object[] params, String[] signature, String operationName)