Java Convert LocalTime to Date

Tags: Java LocalTime Java Date Java 8

In this Java core tutorial we learn how to convert a java.time.LocalTime object to a java.util.Date in Java programming language.

How to convert LocalTime to Date

In order to convert a LocalTime object to a Date object we can follow these steps below.

  • Combine LocalTime with current system date as a LocalDate object to create new LocalDateTime object.
  • Combine LocalDateTime with system default time zone to create a new Instant object.
  • From an Instant we can create new Date object using Date.from() method.

The following Java code to show how to implement the steps above in Java program.

ConvertLocalTimeToDateExample1.java 

import java.time.Instant;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.time.ZoneId;
import java.util.Date;

public class ConvertLocalTimeToDateExample1 {
    public static void main(String... args) {
        LocalTime localTime = LocalTime.of(10, 20, 30);

        LocalDateTime localDateTime = localTime.atDate(LocalDate.now());
        Instant instant = localDateTime.atZone(ZoneId.systemDefault()).toInstant();
        Date date = Date.from(instant);

        System.out.println("LocalTime: " + localTime);
        System.out.println("Date: " + date);
    }
}
The output as below. 
LocalTime: 10:20:30
Date: Fri Apr 22 10:20:30 ICT 2022

Or we can make it shorter with one line of code as below to convert LocalTime to Date. 

Date date = Date.from(localTime.atDate(LocalDate.now()).atZone(ZoneId.systemDefault()).toInstant());

ConvertLocalTimeToDateExample2.java 

import java.time.LocalDate;
import java.time.LocalTime;
import java.time.ZoneId;
import java.util.Date;

public class ConvertLocalTimeToDateExample2 {
    public static void main(String... args) {
        LocalTime localTime = LocalTime.of(10, 20, 30);

        Date date = Date.from(localTime.atDate(LocalDate.now()).atZone(ZoneId.systemDefault()).toInstant());

        System.out.println("LocalTime: " + localTime);
        System.out.println("Date: " + date);
    }
}
The output as below. 
LocalTime: 10:20:30
Date: Fri Apr 22 10:20:30 ICT 2022

Happy Coding 😊

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