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Add serialVersionUID to a Serializable class when missing

org.openrewrite.staticanalysis.AddSerialVersionUidToSerializable

A serialVersionUID field is strongly recommended in all Serializable classes. If this is not defined on a Serializable class, the compiler will generate this value. If a change is later made to the class, the generated value will change and attempts to deserialize the class will fail.

Tags

Recipe source

GitHub, Issue Tracker, Maven Central

This recipe is available under the Moderne Source Available License.

Options

TypeNameDescriptionExample
StringuidOptional. Value of the added serial version UID.42L

Example

Parameters
ParameterValue
uidnull
Before
import java.io.Serializable;

public class Example implements Serializable {
private String fred;
private int numberOfFreds;
}
After
import java.io.Serializable;

public class Example implements Serializable {
private static final long serialVersionUID = 1;
private String fred;
private int numberOfFreds;
}

Usage

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

  1. Add the following to your build.gradle file:
build.gradle
plugins {
id("org.openrewrite.rewrite") version("7.6.1")
}

rewrite {
activeRecipe("org.openrewrite.staticanalysis.AddSerialVersionUidToSerializable")
setExportDatatables(true)
}

repositories {
mavenCentral()
}

dependencies {
rewrite("org.openrewrite.recipe:rewrite-static-analysis:2.9.0")
}
  1. Run gradle rewriteRun to run the recipe.

See how this recipe works across multiple open-source repositories

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Data Tables

Source files that had results

org.openrewrite.table.SourcesFileResults

Source files that were modified by the recipe run.

Column NameDescription
Source path before the runThe source path of the file before the run. null when a source file was created during the run.
Source path after the runA recipe may modify the source path. This is the path after the run. null when a source file was deleted during the run.
Parent of the recipe that made changesIn a hierarchical recipe, the parent of the recipe that made a change. Empty if this is the root of a hierarchy or if the recipe is not hierarchical at all.
Recipe that made changesThe specific recipe that made a change.
Estimated time savingAn estimated effort that a developer to fix manually instead of using this recipe, in unit of seconds.
CycleThe recipe cycle in which the change was made.

Contributors

Tyler Van Gorder, Patrick, Sam Snyder, yuri, Jonathan Schnéider, Knut Wannheden, Tim te Beek, mrbitrary