Use modernized java.util APIs

org.openrewrite.java.migrate.util.JavaUtilAPIs

Certain java util APIs have been introduced and are favored over previous APIs.

Recipe source

GitHub, Issue Tracker, Maven Central

• groupId: org.openrewrite.recipe

• artifactId: rewrite-migrate-java

• version: 2.12.0

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:2.12.0 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("6.12.0")
}

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

repositories {
    mavenCentral()
}

dependencies {
    rewrite("org.openrewrite.recipe:rewrite-migrate-java:2.12.0")
}

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:6.12.0") }
}
rootProject {
    plugins.apply(org.openrewrite.gradle.RewritePlugin)
    dependencies {
        rewrite("org.openrewrite.recipe:rewrite-migrate-java:2.12.0")
    }
    rewrite {
        activeRecipe("org.openrewrite.java.migrate.util.JavaUtilAPIs")
    }
    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>5.29.0</version>
        <configuration>
          <activeRecipes>
            <recipe>org.openrewrite.java.migrate.util.JavaUtilAPIs</recipe>
          </activeRecipes>
        </configuration>
        <dependencies>
          <dependency>
            <groupId>org.openrewrite.recipe</groupId>
            <artifactId>rewrite-migrate-java</artifactId>
            <version>2.12.0</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.util.JavaUtilAPIs

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 JavaUtilAPIs

Definition

Recipe List

• Prefer List.of(..)

• Prefer Map.of(..)

• Prefer Set.of(..)

• Prefer List.of(..)

• Prefer Set.of(..)

• Replace Stream.collect(Collectors.toUnmodifiableList()) with Stream.toList()

Yaml Recipe List

---
type: specs.openrewrite.org/v1beta/recipe
name: org.openrewrite.java.migrate.util.JavaUtilAPIs
displayName: Use modernized `java.util` APIs
description: Certain java util APIs have been introduced and are favored over previous APIs.
recipeList:
  - org.openrewrite.java.migrate.util.MigrateCollectionsSingletonList
  - org.openrewrite.java.migrate.util.MigrateCollectionsSingletonMap
  - org.openrewrite.java.migrate.util.MigrateCollectionsSingletonSet
  - org.openrewrite.java.migrate.util.MigrateCollectionsUnmodifiableList
  - org.openrewrite.java.migrate.util.MigrateCollectionsUnmodifiableSet
  - org.openrewrite.java.migrate.util.ReplaceStreamCollectWithToList:

See how this recipe works across multiple open-source repositories

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.

Contributors

Yeikel, traceyyoshima, Laurens-W, Sam Snyder, Knut Wannheden, Michel Gonzalez, Patrick, Tyler Van Gorder, Jonathan Schnéider, Jonathan Schneider, Tracey Yoshima, Knut Wannheden, Tim te Beek