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Migrate to Java 17

org.openrewrite.java.migrate.UpgradeToJava17

This recipe will apply changes commonly needed when migrating to Java 17. Specifically, for those applications that are built on Java 8, this recipe will update and add dependencies on J2EE libraries that are no longer directly bundled with the JDK. This recipe will also replace deprecated API with equivalents when there is a clear migration strategy. Build files will also be updated to use Java 17 as the target/source and plugins will be also be upgraded to versions that are compatible with Java 17.

Tags​

  • java17

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.

Definition​

Examples​

Example 1​
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>
Before​
package com.abc;

class A {
   public String test() {
       return String.format("Hello %s", "world");
   }
}
After​
package com.abc;

class A {
   public String test() {
       return "Hello %s".formatted("world");
   }
}
Unchanged​
project
Example 2​
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>
Before​
package com.abc;

class A {
   public String test() {
       return String.format("Hello %s", "world");
   }
}
After​
package com.abc;

class A {
   public String test() {
       return "Hello %s".formatted("world");
   }
}
Unchanged​
project

Usage​

This recipe has no required configuration options. It can be activated by adding a dependency on org.openrewrite.recipe:rewrite-migrate-java in your build file or by running a shell command (in which case no build changes are needed):

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

rewrite {
    activeRecipe("org.openrewrite.java.migrate.UpgradeToJava17")
    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​

Chuka Obinabo, Anu Ramamoorthy, Sam Snyder, BhavanaPidapa, Knut Wannheden, Tim te Beek, Jonathan Schneider, traceyyoshima, Tim te Beek, Jonathan Schnéider, Tyler Van Gorder, Adam Slaski, Yifeng Jin, Aaron Gershman, Daryl Robbins, Patrick, Tim te Beek, Aaron Gershman, Michael Keppler, Kun Li, Aakarshit Uppal, BramliAK, eocantu, Shannon Pamperl, Laurens Westerlaken, Niels de Bruin, Cathy, Kun Li, Josh Soref