Migrate to Java 11

org.openrewrite.java.migrate.Java8toJava11

This recipe will apply changes commonly needed when upgrading to Java 11. 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 11 as the target/source and plugins will be also be upgraded to versions that are compatible with Java 11.

Tags

• jaxb

• deprecated

• java11

• jaxws

• jakarta

Recipe source

GitHub, Issue Tracker, Maven Central

• groupId: org.openrewrite.recipe

• artifactId: rewrite-migrate-java

• version: 2.11.0

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.

Usage

This recipe has no required configuration options. It can be activated by adding a dependency on org.openrewrite.recipe:rewrite-migrate-java:2.11.0 in your build file or by running a shell command (in which case no build changes are needed):

Gradle

1. Add the following to your build.gradle file:

build.gradle

plugins {
    id("org.openrewrite.rewrite") version("6.11.2")
}

rewrite {
    activeRecipe("org.openrewrite.java.migrate.Java8toJava11")
}

repositories {
    mavenCentral()
}

dependencies {
    rewrite("org.openrewrite.recipe:rewrite-migrate-java:2.11.0")
}

2. Run gradle rewriteRun to run the recipe.

Gradle init script

1. Create a file named init.gradle in the root of your project.

init.gradle

initscript {
    repositories {
        maven { url "https://plugins.gradle.org/m2" }
    }
    dependencies { classpath("org.openrewrite:plugin:6.11.2") }
}
rootProject {
    plugins.apply(org.openrewrite.gradle.RewritePlugin)
    dependencies {
        rewrite("org.openrewrite.recipe:rewrite-migrate-java:2.11.0")
    }
    rewrite {
        activeRecipe("org.openrewrite.java.migrate.Java8toJava11")
    }
    afterEvaluate {
        if (repositories.isEmpty()) {
            repositories {
                mavenCentral()
            }
        }
    }
}

2. Run gradle --init-script init.gradle rewriteRun to run the recipe.

Maven POM

1. Add the following to your pom.xml file:

pom.xml

<project>
  <build>
    <plugins>
      <plugin>
        <groupId>org.openrewrite.maven</groupId>
        <artifactId>rewrite-maven-plugin</artifactId>
        <version>5.27.0</version>
        <configuration>
          <activeRecipes>
            <recipe>org.openrewrite.java.migrate.Java8toJava11</recipe>
          </activeRecipes>
        </configuration>
        <dependencies>
          <dependency>
            <groupId>org.openrewrite.recipe</groupId>
            <artifactId>rewrite-migrate-java</artifactId>
            <version>2.11.0</version>
          </dependency>
        </dependencies>
      </plugin>
    </plugins>
  </build>
</project>

2. Run mvn rewrite:run to run the recipe.

Maven Command Line

shell

mvn -U org.openrewrite.maven:rewrite-maven-plugin:run -Drewrite.recipeArtifactCoordinates=org.openrewrite.recipe:rewrite-migrate-java:RELEASE -Drewrite.activeRecipes=org.openrewrite.java.migrate.Java8toJava11

Moderne CLI

You will need to have configured the Moderne CLI on your machine before you can run the following command.

shell

mod run . --recipe Java8toJava11

Definition

Recipe List

• Migrate to Java 8

• Prefer java.util.Base64 instead of sun.misc

  • useMimeCoder: false

• Remove explicit casts on Arrays.asList(..).toArray()

• Add explicit JAXB dependencies

• Add explicit JAX-WS dependencies

• Add explicit Inject dependencies

• BigDecimal rounding constants to RoundingMode enums

• Use primitive wrapper valueOf method

• Use modernized java.util.concurrent APIs

• Use modernized java.lang APIs

• Remove methods calls

  • methodPattern: java.lang.Runtime runFinalizersOnExit(boolean)

• Remove methods calls

  • methodPattern: java.lang.System runFinalizersOnExit(boolean)

• Use modernized java.util.logging APIs

• Migrate Lombok to a Java 11 compatible version

• Use modernized java.net APIs

• Use modernized java.sql APIs

• Use modernized javax.lang.model.util APIs

• Use modernized javax.management.monitor APIs

• Use modernized javax.xml.stream APIs

• Remove Cobertura Maven plugin

• Upgrade Wro4j plugin version

• Upgrade JaCoCo Maven plugin version

• Change Maven Java version property values to 11

• Prefer Optional.isEmpty()

• Prefer Optional.isPresent()

• Stream<Optional> idiom recipe

• Upgrade actions/setup-java java-version

  • minimumJavaMajorVersion: 11

• Use com.sun.xml.bind.v2.ContextFactory instead of com.sun.xml.internal.bind.v2.ContextFactory

Yaml Recipe List

---
type: specs.openrewrite.org/v1beta/recipe
name: org.openrewrite.java.migrate.Java8toJava11
displayName: Migrate to Java 11
description: This recipe will apply changes commonly needed when upgrading to Java 11. 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 11 as the target/source and plugins will be also be upgraded to versions that are compatible with Java 11.

tags:
  - jaxb
  - deprecated
  - java11
  - jaxws
  - jakarta
recipeList:
  - org.openrewrite.java.migrate.UpgradeToJava8
  - org.openrewrite.java.migrate.UseJavaUtilBase64:
      useMimeCoder: false
  - org.openrewrite.java.migrate.CastArraysAsListToList
  - org.openrewrite.java.migrate.javax.AddJaxbDependencies
  - org.openrewrite.java.migrate.javax.AddJaxwsDependencies
  - org.openrewrite.java.migrate.javax.AddInjectDependencies
  - org.openrewrite.staticanalysis.BigDecimalRoundingConstantsToEnums
  - org.openrewrite.staticanalysis.PrimitiveWrapperClassConstructorToValueOf
  - org.openrewrite.java.migrate.concurrent.JavaConcurrentAPIs
  - org.openrewrite.java.migrate.lang.JavaLangAPIs
  - org.openrewrite.java.migrate.RemoveMethodInvocation:
      methodPattern: java.lang.Runtime runFinalizersOnExit(boolean)
  - org.openrewrite.java.migrate.RemoveMethodInvocation:
      methodPattern: java.lang.System runFinalizersOnExit(boolean)
  - org.openrewrite.java.migrate.logging.JavaLoggingAPIs
  - org.openrewrite.java.migrate.lombok.UpdateLombokToJava11
  - org.openrewrite.java.migrate.net.JavaNetAPIs
  - org.openrewrite.java.migrate.sql.JavaSqlAPIs
  - org.openrewrite.java.migrate.javax.JavaxLangModelUtil
  - org.openrewrite.java.migrate.javax.JavaxManagementMonitorAPIs
  - org.openrewrite.java.migrate.javax.JavaxXmlStreamAPIs
  - org.openrewrite.java.migrate.cobertura.RemoveCoberturaMavenPlugin
  - org.openrewrite.java.migrate.wro4j.UpgradeWro4jMavenPluginVersion
  - org.openrewrite.java.migrate.jacoco.UpgradeJaCoCoMavenPluginVersion
  - org.openrewrite.java.migrate.JavaVersion11
  - org.openrewrite.java.migrate.util.OptionalNotPresentToIsEmpty
  - org.openrewrite.java.migrate.util.OptionalNotEmptyToIsPresent
  - org.openrewrite.java.migrate.util.OptionalStreamRecipe
  - org.openrewrite.github.SetupJavaUpgradeJavaVersion:
      minimumJavaMajorVersion: 11
  - org.openrewrite.java.migrate.InternalBindContextFactory

See how this recipe works across multiple open-source repositories

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

Contributors

Chuka Obinabo, Tim te Beek, traceyyoshima, Sam Snyder, Satvika Eda, Knut Wannheden, Tyler Van Gorder, Yifeng Jin, Jonathan Schneider, Adam Slaski, Aaron Gershman, Patrick, Aaron Gershman, Tim te Beek, Jonathan Schnéider, Michael Keppler, Tim te Beek, Shannon Pamperl, Josh Soref, Kun Li