Here you can find the source of setFieldValue(Object obj, String fieldName, Object value)
Parameter | Description |
---|---|
obj | the object to read the field value from. If it is a static field the object can be a instance of Class. |
public static void setFieldValue(Object obj, String fieldName, Object value)
//package com.java2s; /*//from w w w .ja v a 2 s. c o m * PHEX - The pure-java Gnutella-servent. * Copyright (C) 2001 - 2005 Phex Development Group * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ import java.lang.reflect.*; public class Main { /** * Reads the value of a field. * @param obj the object to read the field value from. If it is a static field * the object can be a instance of Class. */ public static void setFieldValue(Object obj, String fieldName, Object value) { try { Class clazz; if (obj instanceof Class) { clazz = (Class) obj; } else { clazz = obj.getClass(); } Field field = clazz.getDeclaredField(fieldName); field.setAccessible(true); field.set(obj, value); } catch (Exception exp) { exp.printStackTrace(); throw new RuntimeException(exp.getMessage()); } } }