How to Convert DateTime to Date in Apex Salesforce

Public Class DatetimetoDateConversion{
       public static void dateTimeToDate(){
              DateTime dtime = System.now();
              Date d = Date.newInstance(dtime.year(), dtime.month(), dtime.day());
              System.debug('Date==>' + d);
       }
}

Public Class DatetimetoDateConversion{
       public static void dateTimeToDate(){
              DateTime dtime = System.now();
              Date d = dt.date();
              System.debug('Date==>' + d);
       }
}