JMS messages reading Apache Common Configuration Properties

I am using apache PropertiesConfiguration to read the property file. I have a requirement that multiple jms events read the properties from this file. I want to understand the below questions.

(1) If I add new property, does this class reloads the application instance to refresh the property?

(2) Will there be thread issues when multiple JMS messages read this property file.

(3) I will also add new property while these threads are reading the property. Will this cause any issue or by default it is thread safe.

I did go through the documentation..but was not that clear.