Java.Java8.How to get current time with millisecond precision using Date Time API?

✅ Use LocalTime.now() or LocalDateTime.now()

🔹 Example with LocalTime:

import java.time.LocalTime;

public class TimeWithMillis {
    public static void main(String[] args) {
        LocalTime time = LocalTime.now();
        System.out.println("Current time: " + time);
    }
}

🔹 Output:

Current time: 14:45:12.123

✅ More Common: Use LocalDateTime (includes date too)

import java.time.LocalDateTime;

public class TimeWithMillis {
    public static void main(String[] args) {
        LocalDateTime now = LocalDateTime.now();
        System.out.println("Current datetime: " + now);
    }
}

🧠 Want to Extract Just the Milliseconds?

int millis = LocalTime.now().getNano() / 1_000_000;
System.out.println("Milliseconds: " + millis);

⚠️ getNano() returns nanoseconds — we divide by 1,000,000 to get milliseconds.

🔸 Optional: Format It Nicely

import java.time.LocalTime;
import java.time.format.DateTimeFormatter;

LocalTime time = LocalTime.now();
String formatted = time.format(DateTimeFormatter.ofPattern("HH:mm:ss.SSS"));
System.out.println("Formatted: " + formatted);

✅ Output:

Formatted: 14:45:12.123