Prefer the Java standard library instead of Guava

org.openrewrite.java.migrate.guava.NoGuava

Guava filled in important gaps in the Java standard library and still does. But at least some of Guava's API surface area is covered by the Java standard library now, and some projects may be able to remove Guava altogether if they migrate to standard library for these functions.

Tags

• guava

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.guava.NoGuava")
}

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.guava.NoGuava")
    }
    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.guava.NoGuava</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.guava.NoGuava

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 NoGuava

Definition

Recipe List

• Prefer Files#createTempDirectory()

• Prefer Runnable::run

• Prefer new ArrayList<>()

• Prefer new CopyOnWriteArrayList<>()

• Prefer new LinkedList<>()

• Prefer new HashSet<>()

• Prefer new ConcurrentHashMap<>()

• Prefer new LinkedHashSet<>()

• Prefer java.nio.charset.StandardCharsets

• Prefer java.util.Optional

• Prefer java.util.function.Function

• Prefer java.util.function.Predicate

• Prefer java.util.function.Supplier

• Prefer java.util.Objects#equals

• Prefer java.util.Objects#hash

• Prefer java.util.Objects#requireNonNull

• Prefer java.util.Collections#unmodifiableNavigableMap

• Prefer java.util.Collections#synchronizedNavigableMap

• Prefer java.lang.Char#compare

• Prefer Integer#compare

• Prefer Long#compare

• Prefer Short#compare

• Prefer Integer#compareUnsigned

• Prefer Integer#divideUnsigned

• Prefer Integer#parseUnsignedInt

• Prefer String#join() over Guava Joiner#join()

• Prefer Long#compareUnsigned

• Prefer Long#divideUnsigned

• Prefer Long#parseUnsignedInt

• Prefer Long#remainderUnsigned

• Prefer Math#addExact

• Prefer Math#subtractExact

• Prefer Math#multiplyExact

• Prefer new AtomicReference<>()

• Prefer List.of(..) in Java 9 or higher

• Prefer Map.of(..) in Java 9 or higher

• Prefer Set.of(..) in Java 9 or higher

Yaml Recipe List

---
type: specs.openrewrite.org/v1beta/recipe
name: org.openrewrite.java.migrate.guava.NoGuava
displayName: Prefer the Java standard library instead of Guava
description: Guava filled in important gaps in the Java standard library and still does. But at least some of Guava's API surface area is covered by the Java standard library now, and some projects may be able to remove Guava altogether if they migrate to standard library for these functions.

tags:
  - guava
recipeList:
  - org.openrewrite.java.migrate.guava.NoGuavaCreateTempDir
  - org.openrewrite.java.migrate.guava.NoGuavaDirectExecutor
  - org.openrewrite.java.migrate.guava.NoGuavaListsNewArrayList
  - org.openrewrite.java.migrate.guava.NoGuavaListsNewCopyOnWriteArrayList
  - org.openrewrite.java.migrate.guava.NoGuavaListsNewLinkedList
  - org.openrewrite.java.migrate.guava.NoGuavaSetsNewHashSet
  - org.openrewrite.java.migrate.guava.NoGuavaSetsNewConcurrentHashSet
  - org.openrewrite.java.migrate.guava.NoGuavaSetsNewLinkedHashSet
  - org.openrewrite.java.migrate.guava.PreferJavaNioCharsetStandardCharsets
  - org.openrewrite.java.migrate.guava.PreferJavaUtilOptional
  - org.openrewrite.java.migrate.guava.PreferJavaUtilFunction
  - org.openrewrite.java.migrate.guava.PreferJavaUtilPredicate
  - org.openrewrite.java.migrate.guava.PreferJavaUtilSupplier
  - org.openrewrite.java.migrate.guava.PreferJavaUtilObjectsEquals
  - org.openrewrite.java.migrate.guava.PreferJavaUtilObjectsHashCode
  - org.openrewrite.java.migrate.guava.PreferJavaUtilObjectsRequireNonNull
  - org.openrewrite.java.migrate.guava.PreferJavaUtilCollectionsUnmodifiableNavigableMap
  - org.openrewrite.java.migrate.guava.PreferJavaUtilCollectionsSynchronizedNavigableMap
  - org.openrewrite.java.migrate.guava.PreferCharCompare
  - org.openrewrite.java.migrate.guava.PreferIntegerCompare
  - org.openrewrite.java.migrate.guava.PreferLongCompare
  - org.openrewrite.java.migrate.guava.PreferShortCompare
  - org.openrewrite.java.migrate.guava.PreferIntegerCompareUnsigned
  - org.openrewrite.java.migrate.guava.PreferIntegerDivideUnsigned
  - org.openrewrite.java.migrate.guava.PreferIntegerParseUnsignedInt
  - org.openrewrite.java.migrate.guava.PreferJavaStringJoin
  - org.openrewrite.java.migrate.guava.PreferLongCompareUnsigned
  - org.openrewrite.java.migrate.guava.PreferLongDivideUnsigned
  - org.openrewrite.java.migrate.guava.PreferLongParseUnsignedLong
  - org.openrewrite.java.migrate.guava.PreferLongRemainderUnsigned
  - org.openrewrite.java.migrate.guava.PreferMathAddExact
  - org.openrewrite.java.migrate.guava.PreferMathSubtractExact
  - org.openrewrite.java.migrate.guava.PreferMathMultiplyExact
  - org.openrewrite.java.migrate.guava.NoGuavaAtomicsNewReference
  - org.openrewrite.java.migrate.guava.NoGuavaImmutableListOf
  - org.openrewrite.java.migrate.guava.NoGuavaImmutableMapOf
  - org.openrewrite.java.migrate.guava.NoGuavaImmutableSetOf

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Contributors

Jonathan Schneider, Tim te Beek, Knut Wannheden, Patrick Way, Sam Snyder, Tyler Van Gorder, Tobias Lidskog, Jonathan Schnéider, Tim te Beek, Aaron Gershman, Aaron Gershman, traceyyoshima, Rick Ossendrijver