import oracle.jbo.domain.Date;

public Date getCurrentDateTime() {
        return new Date(new Timestamp(System.currentTimeMillis()));
}

public void Method(){
        eventstartDate = (oracle.jbo.domain.Timestamp)this.bndevtfromdate.getValue();
        eventendDate = (oracle.jbo.domain.Timestamp)this.bndevttodate.getValue();
        if (eventstartDate.compareTo(getCurrentDateTime()) < 0) {
                showmessage("Start Date cannot be less than Today's Date", "I");
        }
}