The toEpochMilli() method of an Instant class is used to convert this instant to the number of milliseconds from the epoch of 1970-01-01T00:00:00Z to a long value. This method returns that long value.
Syntax:
public long toEpochMilli()
Returns: This method returns number of milliseconds since the epoch of 1970-01-01T00:00:00Z.
Exception: This method throws ArithmeticException if numeric overflow occurs.
Below programs illustrate the Instant.toEpochMilli() method:
Program 1:
// Java program to demonstrate // Instant.toEpochMilli() method import java.time.*;
public class GFG {
public static void main(String[] args)
{
// create a Instant object
Instant instant
= Instant.parse( "2018-12-30T19:34:50.63Z" );
// get millisecond value using toEpochMilli()
long value = instant.toEpochMilli();
// print result
System.out.println( "Millisecond value: "
+ value);
}
} |
Program 2:
// Java program to demonstrate // Instant.toEpochMilli() method import java.time.*;
public class GFG {
public static void main(String[] args)
{
// create a Instant object
Instant instant = Instant.now();
// current Instant
System.out.println( "Current Instant: "
+ instant);
// get millisecond value using toEpochMilli()
long value = instant.toEpochMilli();
// print result
System.out.println( "Millisecond value: "
+ value);
}
} |
References: https://docs.oracle.com/javase/10/docs/api/java/time/Instant.html#toEpochMilli()