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Upgrade Java version

org.openrewrite.java.migrate.UpgradeJavaVersion

Upgrade build plugin configuration to use the specified Java version. This recipe changes java.toolchain.languageVersion in build.gradle(.kts) of gradle projects, or maven-compiler-plugin target version and related settings. Will not downgrade if the version is newer than the specified version.

Recipe source​

GitHub, Issue Tracker, Maven Central

info

This recipe is composed of more than one recipe. If you want to customize the set of recipes this is composed of, you can find and copy the GitHub source for the recipe from the link above.

This recipe is available under the Moderne Source Available License.

Options​

TypeNameDescriptionExample
IntegerversionThe Java version to upgrade to.11

Definition​

Example​

Parameters​
ParameterValue
version17
Before​
pom.xml
<project>
  <modelVersion>4.0.0</modelVersion>

  <properties>
    <java.version>1.8</java.version>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
  </properties>

  <groupId>com.mycompany.app</groupId>
  <artifactId>my-app</artifactId>
  <version>1</version>
</project>
After​
pom.xml
<project>
  <modelVersion>4.0.0</modelVersion>

  <properties>
    <java.version>17</java.version>
    <maven.compiler.source>17</maven.compiler.source>
    <maven.compiler.target>17</maven.compiler.target>
  </properties>

  <groupId>com.mycompany.app</groupId>
  <artifactId>my-app</artifactId>
  <version>1</version>
</project>

Usage​

This recipe has required configuration parameters. Recipes with required configuration parameters cannot be activated directly (unless you are running them via the Moderne CLI). To activate this recipe you must create a new recipe which fills in the required parameters. In your rewrite.yml create a new recipe with a unique name. For example: com.yourorg.UpgradeJavaVersionExample. Here's how you can define and customize such a recipe within your rewrite.yml:

rewrite.yml
---
type: specs.openrewrite.org/v1beta/recipe
name: com.yourorg.UpgradeJavaVersionExample
displayName: Upgrade Java version example
recipeList:
  - org.openrewrite.java.migrate.UpgradeJavaVersion:
      version: 11

Now that com.yourorg.UpgradeJavaVersionExample has been defined, activate it and take a dependency on org.openrewrite.recipe:rewrite-migrate-java:3.8.0 in your build file:

  1. Add the following to your build.gradle file:
build.gradle
plugins {
    id("org.openrewrite.rewrite") version("7.5.0")
}

rewrite {
    activeRecipe("com.yourorg.UpgradeJavaVersionExample")
    setExportDatatables(true)
}

repositories {
    mavenCentral()
}

dependencies {
    rewrite("org.openrewrite.recipe:rewrite-migrate-java:3.8.0")
}
  1. Run gradle rewriteRun to run the recipe.

See how this recipe works across multiple open-source repositories​

Run this recipe on OSS repos at scale with the Moderne SaaS.

The community edition of the Moderne platform enables you to easily run recipes across thousands of open-source repositories.

Please contact Moderne for more information about safely running the recipes on your own codebase in a private SaaS.

Data Tables​

Source files that had results​

org.openrewrite.table.SourcesFileResults

Source files that were modified by the recipe run.

Column NameDescription
Source path before the runThe source path of the file before the run. null when a source file was created during the run.
Source path after the runA recipe may modify the source path. This is the path after the run. null when a source file was deleted during the run.
Parent of the recipe that made changesIn a hierarchical recipe, the parent of the recipe that made a change. Empty if this is the root of a hierarchy or if the recipe is not hierarchical at all.
Recipe that made changesThe specific recipe that made a change.
Estimated time savingAn estimated effort that a developer to fix manually instead of using this recipe, in unit of seconds.
CycleThe recipe cycle in which the change was made.

Contributors​

Sam Snyder, Jonathan Schneider, Tim te Beek, Shannon Pamperl, Niels de Bruin, Kun Li