question: private boolean isActive ( Calendar activeStart , Calendar inactiveStart ) { if ( inactiveStart != null && activeStart != null && inactiveStart . before ( activeStart ) ) return ! isActive ( inactiveStart , activeStart ) ; Calendar current = Calendar . getInstance ( ) ; return ! ( activeStart != null && current . before ( activeStart ) ) && ! ( inactiveStart != null && current . after ( inactiveStart ) ) ; }
target:  Given a time when a particular state changes from inactive to active, and a time when a particular state changes from active to inactive, determines whether that state is currently active.