private static void sumarRestarDias(){
DateFormat dateFormat = new SimpleDateFormat("dd/MM/yyyy");
Calendar calHoy= Calendar.getInstance();
Calendar calAyer= Calendar.getInstance();
Calendar calMannana= Calendar.getInstance();
calHoy.setTime(new Date());
calAyer.setTime(calHoy.getTime());
calMannana.setTime(calHoy.getTime());
System.out.println(dateFormat.format(calHoy.getTime()));
int numeroDia=calHoy.get(Calendar.DAY_OF_WEEK);
numeroDia -=1;
System.out.println("fia de la semana: "+numeroDia);
calAyer.add(Calendar.DATE,-31);
calMannana.add(Calendar.DATE,(6-numeroDia));
System.out.println("Fecha primera: "+dateFormat.format(calAyer.getTime()));
System.out.println("Fecha hoy: "+dateFormat.format(calHoy.getTime()));
System.out.println("Fecha ultima: "+dateFormat.format(calMannana.getTime()));
}
DateFormat dateFormat = new SimpleDateFormat("dd/MM/yyyy");
Calendar calHoy= Calendar.getInstance();
Calendar calAyer= Calendar.getInstance();
Calendar calMannana= Calendar.getInstance();
calHoy.setTime(new Date());
calAyer.setTime(calHoy.getTime());
calMannana.setTime(calHoy.getTime());
System.out.println(dateFormat.format(calHoy.getTime()));
int numeroDia=calHoy.get(Calendar.DAY_OF_WEEK);
numeroDia -=1;
System.out.println("fia de la semana: "+numeroDia);
calAyer.add(Calendar.DATE,-31);
calMannana.add(Calendar.DATE,(6-numeroDia));
System.out.println("Fecha primera: "+dateFormat.format(calAyer.getTime()));
System.out.println("Fecha hoy: "+dateFormat.format(calHoy.getTime()));
System.out.println("Fecha ultima: "+dateFormat.format(calMannana.getTime()));
}
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