import java.io.Serializable; import java.util.GregorianCalendar; public class Interval implements Serializable { private static final long serialVersionUID = 2014L; GregorianCalendar startingTime; GregorianCalendar endingTime; public Interval() { startingTime = new GregorianCalendar(); endingTime = new GregorianCalendar(); } public Interval(GregorianCalendar startingTime, GregorianCalendar endingTime) { this.startingTime = startingTime; this.endingTime = endingTime; } public void setStartingTime(GregorianCalendar startingTime) { this.startingTime = startingTime; } public GregorianCalendar getStartingTime() { return startingTime; } public void setEndingTime(GregorianCalendar endingTime) { this.endingTime = endingTime; } public GregorianCalendar getEndingTime() { return endingTime; } }