The java.time.LocalTime class represents a time without a date and without time zone information, using hour, minute, second, and nanosecond.
Commonly Used Methods
Simple Program
import java.time.LocalTime;
public class SimpleLocalTimeExample {
public static void main(String[] args) {
LocalTime now = LocalTime.now();
LocalTime lunchTime = LocalTime.of(13, 0);
System.out.println("Current time: " + now);
System.out.println("Lunch is scheduled at: " + lunchTime);
System.out.println("Is it lunch time now? " + now.equals(lunchTime));
}
}Problem Statement
LotusJavaPrince and LotusPythonPrince are creating a conference room scheduler for the TechMind Event Center. Each room has defined opening and closing times. They need to:
- Accept user input for desired start and end time of a booking.
- Check if the requested time slot is within the room’s operational hours.
- Deny or accept the booking request based on the time check.
import java.time.LocalTime;
import java.util.Scanner;
public class ConferenceRoomScheduler {
public static void main(String[] args) {
// Operational hours
LocalTime openingTime = LocalTime.of(9, 0);
LocalTime closingTime = LocalTime.of(18, 0);
Scanner scanner = new Scanner(System.in);
// Input start time
System.out.print("Enter meeting start time (HH:mm): ");
String startInput = scanner.nextLine();
LocalTime startTime = LocalTime.parse(startInput);
// Input end time
System.out.print("Enter meeting end time (HH:mm): ");
String endInput = scanner.nextLine();
LocalTime endTime = LocalTime.parse(endInput);
System.out.println("Room Available: " + openingTime + " to " + closingTime);
System.out.println("Requested: " + startTime + " to " + endTime);
// Check booking validity
if (startTime.isBefore(openingTime) || endTime.isAfter(closingTime) || endTime.isBefore(startTime)) {
System.out.println("Invalid booking. Please choose a time within operational hours.");
} else {
System.out.println("Booking confirmed.");
}
scanner.close();
}
}
/*
Enter meeting start time (HH:mm): 10:30
Enter meeting end time (HH:mm): 12:00
Room Available: 09:00 to 18:00
Requested: 10:30 to 12:00
Booking confirmed.
*/The LocalTime class is ideal for applications dealing with:
- Daily schedules, such as work shifts, medication reminders, or appointments.
- Time comparisons and operations, like checking if a store is open or calculating how long a session should last.
- Use it alongside
LocalDatefor full date-time processing, or withDurationto compute time differences.
Its precision and immutability make it reliable in event scheduling systems, alarms, reminders, and banking hours.