question: public Week ( int week , Year year ) { if ( ( week < FIRST_WEEK_IN_YEAR ) && ( week > LAST_WEEK_IN_YEAR ) ) { throw new IllegalArgumentException ( "The 'week' argument must be in the range 1 - 53." ) ; } this . week = ( byte ) week ; this . year = ( short ) year . getYear ( ) ; peg ( Calendar . getInstance ( ) ) ; }
target:  Creates a time period representing the week in the specified year.