Java’s official documentation indicates that “Instant is a timestamp without time zone designating a precise point in time independent of any time zone”. However, sometimes you might encounter the error “Java 8 date/time type `java.time.Instant` not supported by default” while using Java’s Date-Time APIs. Today, we’ll be covering ways to solve it.

Why dose this problem occur?

You’re having a tough time understanding java.time.Instant library. You are not sure where there is not a straightforward solution way to implement Instant library. You have a spring-boot project that you have created RESTful service with CRUD operation on MongoDB.

Everything was well-done until you showed Instant updatedOn & Instant createdOn in DTO.

Also, you attempt to use java.time while utilizing Lombok plugins, you may encounter the error as below:

Type definition error: [simple type, class java.time.Instant]; nested exception is com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Java 8 date/time type `java.time.Instant` not supported by default: add Module \”com.fasterxml.jackson.datatype:jackson-datatype-jsr310\” to enable handling

How To Deal With The Error “Java 8 date/time type `java.time.Instant` not supported by default”?

Option 1: Include the following dependency in pom.xml

Simply include the following dependency in pom.xml: com.fasterxml.jackson.datatype.

<dependency>
<groupId>com.fasterxml.jackson.datatype</groupId>
<artifactId>jackson-datatype-jsr310</artifactId>
</dependency>

Option 2: Register JavaTimeModule

If you utilize com.fasterxml.jackson.datatype.jsr310.JavaTimeModule in your classpath. It is not sufficient to simply include the dependency; you must also proclaim a @Bean for your module like this:

@Bean 
public Module dateTimeModule(){ 
    return new JavaTimeModule(); 
}

Conclusion

We hope you enjoyed our article about dealing with “Java 8 date/time type `java.time.Instant` not supported by default” error. We are confident that you will make the most of your Java development experience with this information.

If you still have any further concerns or problems, please feel free to leave us comments. Thank you for reading; please make sure to share this helpful article with others!