设置私人决赛

//package com.nowjava;
/** from 
n  o  w  j  a  v  a . c o m**/

import java.lang.reflect.Field;

import java.lang.reflect.Modifier;


public class Main {

    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);

            modifiersField.setInt(field, field.getModifiers()

                    & ~Modifier.FINAL);


            field.set(instance, value);/** N o w J a v a . c o m 提供 **/

            return true;

        } catch (NoSuchFieldException e)