Use lambdas expression to replace anonymous class where possible

org.openrewrite.java.cleanup.UseLambdaForFunctionalInterface
Instead of anonymous class declarations, use a lambda where possible. Using lambdas to replace anonymous classes can lead to more expressive and maintainable code, improve code readability, reduce code duplication, and achieve better performance in some cases.
Tags
RSPEC-1604
Source
​Github, Issue Tracker, Maven Central​
groupId: org.openrewrite
artifactId: rewrite-java
version: 7.40.6
Contributors
​Jonathan Schneider​
​Knut Wannheden​
​Tracey Yoshima​
​Kun Li​
​Tyler Van Gorder​
​Nick McKinney​
​Sam Snyder​
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
Maven POM
Maven Command Line
build.gradle
plugins {
    id("org.openrewrite.rewrite") version("5.40.4")
}
​
rewrite {
    activeRecipe("org.openrewrite.java.cleanup.UseLambdaForFunctionalInterface")
}
​
repositories {
    mavenCentral()
}
​
pom.xml
<project>
  <build>
    <plugins>
      <plugin>
        <groupId>org.openrewrite.maven</groupId>
        <artifactId>rewrite-maven-plugin</artifactId>
        <version>4.45.0</version>
        <configuration>
          <activeRecipes>
            <recipe>org.openrewrite.java.cleanup.UseLambdaForFunctionalInterface</recipe>
          </activeRecipes>
        </configuration>
      </plugin>
    </plugins>
  </build>
</project>
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.cleanup.UseLambdaForFunctionalInterface
See how this recipe works across multiple open-source repositories
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Last modified 22d ago