Using Instant and Duration Classes

Description

Demo Code

import java.time.Duration;
import java.time.Instant;

public class Main {
  public static void main(String[] args) {
    Instant i1 = Instant.ofEpochSecond(20);
    Instant i2 = Instant.ofEpochSecond(55);
    System.out.println("i1:" + i1);
    System.out.println("i2:" + i2);
    //  w w  w  .j ava 2 s. com
    Duration d1 = Duration.ofSeconds(55);
    Duration d2 = Duration.ofSeconds(-17);
    System.out.println("d1:" + d1);
    System.out.println("d2:" + d2);
    
    // Compare instants
    System.out.println("i1.isBefore(i2):" + i1.isBefore(i2));
    System.out.println("i1.isAfter(i2):" + i1.isAfter(i2));
    
    // Add and subtract durations to instants
    Instant i3 = i1.plus(d1);
    Instant i4 = i2.minus(d2);
    System.out.println("i1.plus(d1):" + i3);
    System.out.println("i2.minus(d2):" + i4);
    
    // Add two durations
    Duration d3 = d1.plus(d2);
    System.out.println("d1.plus(d2):" + d3);
  }
}

Result

Human-Scale Date and Time Classes and their Components

Class Name	Date	Time	Zone Offset	Zone Rule
LocalDate	Yes	No	No	No
LocalTime	No	Yes	No	No
LocalDateTime	Yes	Yes	No	No
OffsetTime	No	Yes	Yes	No
OffsetDateTime	Yes	Yes	Yes	No
ZonedDateTime	Yes	Yes	Yes	Yes
ZoneOffset	No	No	Yes	No
ZoneId	No	No	Yes	Yes

Using Instant and Duration Classes - Java Date Time

Description

Demo Code

Result

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