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Moderne licensed

Remove catch for a checked exception if the try block does not throw that exception

Recipe IDorg.openrewrite.staticanalysis.UnnecessaryCatch
Artifactorg.openrewrite.recipe:rewrite-static-analysis

A refactoring operation may result in a checked exception that is no longer thrown from a try block. This recipe will find and remove unnecessary catch blocks.

Single recipeMSAL

Usage

This recipe has no required configuration options. You’ll need the Moderne CLI configured before running the command below.

mod run . --recipe org.openrewrite.staticanalysis.UnnecessaryCatch

If the recipe isn’t available locally, install it with:

mod config recipes jar install org.openrewrite.recipe:rewrite-static-analysis:2.40.0

Options

NameTypeDescription
includeJavaLangExceptionbooleanWhether to include java.lang.Exception in the list of checked exceptions to remove. Unlike other checked exceptions, java.lang.Exception is also the superclass of unchecked exceptions. So removing catch(Exception e) may result in changed runtime behavior in the presence of unchecked exceptions. Default false
includeJavaLangThrowablebooleanWhether to include java.lang.Throwable in the list of exceptions to remove. Unlike other checked exceptions, java.lang.Throwable is also the superclass of unchecked exceptions. So removing catch(Throwable e) may result in changed runtime behavior in the presence of unchecked exceptions. Default false

Data tables

Structured output this recipe can produce.

  • Source files that had resultsSource files that were modified by the recipe run.org.openrewrite.table.SourcesFileResults
  • Source files that had search resultsSearch results that were found during the recipe run.org.openrewrite.table.SearchResults
  • Source files that errored on a recipeThe details of all errors produced by a recipe run.org.openrewrite.table.SourcesFileErrors
  • Recipe performanceStatistics used in analyzing the performance of recipes.org.openrewrite.table.RecipeRunStats