Here you can find the source of invokeSetter(Object o, String name, Object value, Class clazz)
public static void invokeSetter(Object o, String name, Object value, Class clazz) throws SecurityException, NoSuchMethodException, IllegalArgumentException, IllegalAccessException, InvocationTargetException
//package com.java2s; /*//w w w. j a va 2s. com Copyright 2013, 2016-2017 Nationale-Nederlanden Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. */ import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; public class Main { public static void invokeSetter(Object o, String name, Object value) throws SecurityException, NoSuchMethodException, IllegalArgumentException, IllegalAccessException, InvocationTargetException { invokeSetter(o, name, value, value.getClass()); } public static void invokeSetter(Object o, String name, Object value, Class clazz) throws SecurityException, NoSuchMethodException, IllegalArgumentException, IllegalAccessException, InvocationTargetException { Class argsTypes[] = { clazz }; Method setterMtd = o.getClass().getMethod(name, argsTypes); Object args[] = { value }; setterMtd.invoke(o, args); } }