Java has primitive types (int, boolean, float, etc) and anytime you wish to use them as an instance of an object they are wrapped in an associated Class type. For example, booleans get wrapped by Booleans, int as Integer etc.
It has its benefits too. boolean has no helper methods (since it's not a class), but Boolean does. So, if you wanted to convert a string to a boolean you could try Boolean.valueOf("true").
Hope that helps.
