OpenRewrite

Major migrations made easy with OpenRewrite

Posted on by  
Tim te Beek

OpenRewrite enables large-scale distributed source code refactoring for framework migrations, vulnerability patches, and API migrations with an early focus on the Java language.

— Introduction to OpenRewrite
https://docs.openrewrite.org

To demonstrate OpenRewrite, this blogpost will walk through upgrading a Spring Boot 1.5 application to 2.5+. Along the way we will pick up JUnit 5, and migrate from Java 8 to 17, with minimal manual intervention.

We’ll start with the Spring PetClinic Sample Application, back as it was almost five years ago in 2017!

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