Not getting spanish characters (ú, í )but getting like (ó , Ã) on UI

I declared three locale conversions in three properties files like Strings.properties, Strings_es_ES.properties and Strings_en_GB.properties ( for US, ES and UK)

In Strings_es_ES.properties,i declared the strings like below and set the properties file with UTF-8 format.

admin.main.numberofrewards=Número de recompensas:
admin.main.categorylist=lista Categoría

I am using the above resource bundle in .jsp files like below

<%@ page pageEncoding="UTF-8"%>
<h2><spring:message code="admin.main.numberofrewards"/></h2>
<p><spring:message code="admin.main.categorylist"/></p>

I am getting output on the browser like below

Nómero de recompensas
lista CategorÃa

Please help me on this