The from(Instant inst) method of Java Date class returns an instance of date which is obtained from an Instant object.
Syntax:
public static Date from(Instant inst)
Parameters: The method takes one parameter inst of Instant type which is required to be converted.
Return Value: The method returns a date representing the same point on the timeline as the passing instant.
Exceptions:
- NullPointerException: This is thrown when the instant is left null.
- IllegalArgumentException: This is thrown when the instant is too large to be represented as a Date.
Below programs illustrate the use of from() Method in Java:
Example 1:
// Java code to demonstrate// from() method of Date class import java.time.Instant;import java.util.Date; public class JavaDateDemo { public static void main(String args[]) { // Creating Date Object Date dateOne = new Date(); // Creating Instant object Instant inst = Instant.now(); // Displaying the instant System.out.println( "Present: " + dateOne.from(inst)); }} |
Output:
Present: Tue Mar 26 06:45:40 UTC 2019
Example 2:
import java.util.Date;import java.util.Calendar;import java.time.Instant; public class GfG { public static void main(String args[]) { // Creating a Calendar object Calendar c1 = Calendar.getInstance(); // Set Month // MONTH starts with 0 i.e. ( 0 - Jan) c1.set(Calendar.MONTH, 00); // Set Date c1.set(Calendar.DATE, 30); // Set Year c1.set(Calendar.YEAR, 2019); // Creating a date object // with specified time. Date dateOne = c1.getTime(); Instant inst = dateOne.toInstant(); System.out.println( "Date: " + dateOne.from(inst)); }} |
Output:
Date: Wed Jan 30 06:45:43 UTC 2019
Reference: https://docs.oracle.com/javase/8/docs/api/java/util/Date.html#from-java.time.Instant-
