How to check/test whether application is not caching on browser?

I have written a class CacheControlFilter implements javax.servlet.Filter to set header to make sure that the application is not caching. have done entry in the web.xml also

<filter>
    <filter-name> Cache controller filter</filter-name>
    <filter-class>com.shc.ap.filter.CacheControlFilter</filter-class>
</filter>
<filter-mapping>
    <filter-name>Cache controller filter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

please suggest me how to check/test whether this is working or not? let me know if you want more information about the same.