Intellij Error: Spring class file has wrong version 61.0, should be 55.0

-


Intellij is a very smart IDE, but unlike any other ide you are still smarter than it, so whenever a problem arises when using the IDE and the ide doesn’t have the clue what is the problem, you are the one who is responsible for fixing it. The IDE just gives you a pointer of the error, with hundreds of possibilities that can cause it.

For starters or even a developer that uses Spring boot frequently, it’s still quite ambiguous problems that often prevent us from starting to develop the project further because it’s the beginning of creating the project.

Currently the default Spring version when creating a project using Start.spring.io is Spring boot v3.x. And that is to use Java 17. But if you have multiple projects in your working computer that use older versions of Java, upgrading to java 17 is not convenient. So that becomes the problem, because Spring 3x must use Java 17, but in my current COmputer i set it to Java 11.

How to fix Intellij class file has wrong version 61.0, should be 55.0
Basically if you encounter any Error class file that has the wrong version, it means you are not using the right version of JDK, the solution is just upgrade your JDK similar or higher than the required version by your library or framework you are using. But in this case, I don't want to change my JDK because I have multiple projects that need a lower JDK version, so I have to use the lower version of the framework.

Results/Conclusion and Reference
The conclusion of this problem is the following:
For Spring boot 3x use JDK 17
For Spring boot 2x you can use JDK 11 or even 8

Here some Java class version code for reference:
JDK 17 the class version is 61
JDK 16 the class version is 60
JDK 15 the class version is 59
JDK 14 the class version is 58
JDK 13 the class version is 57
JDK 12 the class version is 56
JDK 11 the class version is 55
JDK 10 the class version is 54
JDK 9 the class version is 53
JDK 8 the class version is 52

Popular posts from this blog

ERROR 1348 Column Password Is Not Updatable When Updating MySQL Root Password

-
Image
MySQL and MariaDB password As already mentioned in the title of this blog, this error message sometimes occurred when we are trying to update our root password database, either MySQL or MariaDB, The error says: ERROR 1348 (HY000): Column 'Password' is not updatable This is because if we use this SQL command to update our database root password, and it turn out to be Restricted by MySQL to use update on mysql database. UPDATE mysql.user SET Password=PASSWORD('1234') WHERE User='root'; The solutions for MySQL Error1348 So you can not update a user password using Update commands, to update the password, use ALTER commands instead. like the following. ALTER USER 'root'@'localhost' IDENTIFIED BY '1234'; And then you need to do the flush privileges to commit previous queries (that alter command above) into the system, simply do like this. flush privileges; So now you have your root with password 1234. Although it is recommended to
Read more

How To Create Spring Boot Project Using Netbeans

-
Image
Spring Boot is a handy tool that simplifies the development of Spring Framework applications by reducing the need for cumbersome configuration. In this tutorial, I'll guide you through creating a Spring Boot application using the Netbeans IDE. While you can certainly create a Spring Boot application in Netbeans manually, it's much easier with a plugin designed for Spring development. Here's a step-by-step guide to get you started: 1. Install the Spring Boot Plugin: Open Netbeans and navigate to the Tools menu. Click on "Plugins." Once the Plugins window opens, select the "Available Plugins" tab. Look for the "Nb SpringBoot" plugin, then install and activate it. 2. Create a New Spring Boot Project: After restarting Netbeans IDE, you can create a new project with Spring Boot. Go to File > New Project. Under Categories, select Maven, then choose "Spring Boot Basic." 3. Add Dependencies: With your new project created, open the po
Read more

Spring Kafka - How to use ReplyingKafkaTemplate send and reply synchronously

-
Image
Microservice Spring with Apache Kafka Today, I want to share how to use Kafka. It's quite interesting once you get the hang of it, and I hope my explanation will make it a bit easier for you. So, Kafka is primarily known as an asynchronous messaging queuing system. This means it allows different parts of your application to communicate with each other without waiting for immediate responses. However, there are times when you might need a more immediate reply from another service in your project. Luckily, Kafka can handle this too. Here’s how it works: The client side sends a message to the server side via Kafka. This message includes a special identifier in the Kafka header request, known as KafkaHeaders.CORRELATION_ID, along with a topic where the server should respond. The server, after processing the request, sends a message back to the same topic with the same correlation ID. This way, the client knows that the message is a response to its initial request and can act accordingl
Read more