java para obtener la hora actual
GregorianCalendar calendar = new GregorianCalendar();
int hour = calendar.get(Calendar.HOUR_OF_DAY);
System.out.println("hour=" + hour);
GregorianCalendar calendar = new GregorianCalendar();
int hour = calendar.get(Calendar.HOUR_OF_DAY);
System.out.println("hour=" + hour);