Your getter method doesn't follow the JavaBeans naming convention. It should be named getRssFeedURLs (even if you have an acronym, it should be capitalized like a regular word). In EL, when you specify a property name, it actually ends up calling the getter for that property. To figure out the name of the getter, it capitalizes the first letter in the property name that you have provided (so rssFeedURLs gets converted to RssFeedURLs) and tacks on get to the front of it. So you end up with getRssFeedURLs. However, you have named your method as getRSSFeedURLs. Java can't find the method and so you get a PropertyNotFoundException exception.
If you don't name your getters right, you cannot access them with EL.
