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Use static import

Recipe IDorg.openrewrite.java.UseStaticImport
Artifactorg.openrewrite:rewrite-java

Removes unnecessary receiver types from static method invocations. For example, Collections.emptyList() becomes emptyList().

Single recipeApache 2.0

Usage

You’ll need the Moderne CLI configured before running the command below.

mod run . --recipe org.openrewrite.java.UseStaticImport --recipe-option "methodPattern=java.util.Collections emptyList()"

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

mod config recipes jar install org.openrewrite:rewrite-java:8.88.0

Options

NameTypeDescription
methodPatternrequiredStringA method pattern is used to find matching method invocations. For example, to find all method invocations in the Guava library, use the pattern: com.google.common..*#*(..).

The pattern format is <PACKAGE>#<METHOD_NAME>(<ARGS>).

..* includes all subpackages of com.google.common.
*(..) matches any method name with any number of arguments.

For more specific queries, like Guava's ImmutableMap, use com.google.common.collect.ImmutableMap#*(..) to narrow down the results.
e.g. java.util.Collections emptyList()

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