date

Java Date and Time API

The Java Date and Time API is used for working with dates, times, and durations in Java. Starting with Java 8, the new java.time package was introduced to simplify date and time operations.

Get Current Date and Time

import java.time.LocalDateTime;

public class DateTimeExample {
    public static void main(String[] args) {
        // Get current date and time
        LocalDateTime now = LocalDateTime.now();
        System.out.println("Current Date and Time: " + now);
    }
}

The LocalDateTime.now() method returns the current date and time.

Format Date and Time

import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;

public class DateTimeExample {
    public static void main(String[] args) {
        LocalDateTime now = LocalDateTime.now();
        
        // Format date and time
        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
        String formattedDate = now.format(formatter);
        System.out.println("Formatted Date and Time: " + formattedDate);
    }
}

The DateTimeFormatter class is used to format the date and time according to a specified pattern.

Parse Date and Time

import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;

public class DateTimeExample {
    public static void main(String[] args) {
        String dateStr = "2024-11-15 15:30:00";
        
        // Parse string into date and time
        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
        LocalDateTime parsedDate = LocalDateTime.parse(dateStr, formatter);
        System.out.println("Parsed Date and Time: " + parsedDate);
    }
}

The parse() method is used to convert a string into a LocalDateTime object, based on the specified format.