import java.util.ArrayList; public class LangsteHittegolfPeriode extends Grootheid{ //constructor public LangsteHittegolfPeriode(Measurement measurement1, ArrayList measurement2){ setName("Langste Hittegolf "); updatePeriod(measurement2); } public void updatePeriod(ArrayList list){ setPeriod(StatisticsCalculator.langsteHittegolfPeriode(list)); } public void displayGraph(){} }