static void f2() {
LocalTime time = LocalTime.of(20, 30);
int hour = time.getHour(); // 20
int minute = time.getMinute(); // 30
time = time.withSecond(6); // 20:30:06
time = time.plusMinutes(3); // 20:33:06
System.out.println(hour);
System.out.println(minute);
System.out.println(time);
}
