设置私有静态最终字段

//package com.nowjava;
/** 
 来自 N o w J a v a . c o m - 时  代  Java**/

import java.lang.reflect.Field;

import java.lang.reflect.Modifier;


public class Main {

    public static boolean setPrivateStaticFinalField(Class clazz,

            String fieldName, Object value) {

        return setPrivateFinalField(clazz, fieldName, null, value);

    }


    public static boolean setPrivateFinalField(Class clazz,

            String fieldName, Object instance, Object value) {

        try {

            Field field = clazz.getDeclaredField(fieldName);

            field.setAccessible(true);


            Field modifiersField = Field.class

                    .getDeclaredField("modifiers");

            modifiersField.setAccessible(true);
            /**
             * 时代Java公众号 - nowjava.com 提 供 
            **/

            modifiersField.setInt(field, field.getModifiers()

                    & ~Modifier.FINAL);


            field.set(instance, value);

            return true;

        }