Java Collections Data Type

What is the Java data type or a collection type that can be used in a java class in order to hold set of String data from a checkbox UI control?

I have a UI label which can be assigned with set of Strings through set of checkboxes. I'm writing a POJO class where I need to use a collection data type in order to hold all these Strings.

I looked it up, but I couldn't get appropriate answer.

I appreciate any answers!

Thanks!