String s = "Systemets dato og klokkeslet"

Calendar temp = Calendar.getInstance();
   
    int dag      = temp.get( Calendar.DAY_OF_MONTH );
    int maaned  = temp.get( Calendar.MONTH ) + 1;
    int aar      = temp.get( Calendar.YEAR );
   
    int timer    = temp.get( Calendar.HOUR_OF_DAY );
    int minutter = temp.get( Calendar.MINUTE );
    int sekunder = temp.get( Calendar.SECOND );
   
   
    System.out.println( dag + "-" + maaned + "-" + aar + " " +
                        timer + ":" + minutter + ":" + sekunder );

SimpleDateFormat sdf = new SimpleDateFormat("dd-MM-yyyy HH:mm:ss");
String s = sdf.format(new Date());

Husk at importere:

import java.util.Date;
import java.text.SimpleDateFormat;