Remove unused imports

org.openrewrite.java.RemoveUnusedImports
Remove imports for types that are not referenced. As a precaution against incorrect changes no imports will be removed from any source where unknown types are referenced. The most common cause of unknown types is the use of annotation processors not supported by OpenRewrite, such as lombok.
Tags
RSPEC-1128
Source
​GitHub, Issue Tracker, Maven Central​
groupId: org.openrewrite
artifactId: rewrite-java
version: 8.6.0
Usage
This recipe has no required configuration parameters and comes from a rewrite core library. It can be activated directly without adding any dependencies.
Gradle
Gradle init script
Maven POM
Maven Command Line
1.Add the following to your build.gradle file:
build.gradle
plugins {
    id("org.openrewrite.rewrite") version("6.3.11")
}
​
rewrite {
    activeRecipe("org.openrewrite.java.RemoveUnusedImports")
}
​
repositories {
    mavenCentral()
}
​
2.Run gradle rewriteRun to run the recipe.
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:latest.release") }
}
rootProject {
    plugins.apply(org.openrewrite.gradle.RewritePlugin)
    dependencies {
        rewrite("org.openrewrite:rewrite-java")
    }
    rewrite {
        activeRecipe("org.openrewrite.java.RemoveUnusedImports")
    }
    afterEvaluate {
        if (repositories.isEmpty()) {
            repositories {
                mavenCentral()
            }
        }
    }
}
2.Run gradle --init-script init.gradle rewriteRun to run the recipe.
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>5.5.2</version>
        <configuration>
          <activeRecipes>
            <recipe>org.openrewrite.java.RemoveUnusedImports</recipe>
          </activeRecipes>
        </configuration>
      </plugin>
    </plugins>
  </build>
</project>
2.Run mvn rewrite:run to run the recipe.
You will need to have Maven installed on your machine before you can run the following command.
shell
mvn -U org.openrewrite.maven:rewrite-maven-plugin:run \
  -Drewrite.activeRecipes=org.openrewrite.java.RemoveUnusedImports
Contributors
​Jonathan Schneider​
​Thomas Zub​
tclayton-newr
​Greg Adams​
​traceyyoshima​
Patrick Way
​Knut Wannheden​
Tyler Van Gorder
​Scott Jungling​
​Sam Snyder​
​Aaron Gershman​
​Kun Li​
See how this recipe works across multiple open-source repositories
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​​
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Please contact Moderne for more information about safely running the recipes on your own codebase in a private SaaS.
Remove static import
Rename package name
Last modified 5d ago