Date from() method in Java with Examples

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)); 

    } 
}