diffplug · Goooler · Jun 24, 2025 · Jun 18, 2025 · Jun 19, 2025 · Jun 19, 2025
diff --git a/CHANGES.md b/CHANGES.md
@@ -10,6 +10,8 @@ This document is intended for Spotless developers.
 We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (starting after version `1.27.0`).

 ## [Unreleased]
+### Added
+* Added support for removing wildcard imports via `removeWildcardImports` step. ([#2517](https://github.com/diffplug/spotless/pull/2517))

 ## [3.1.2] - 2025-05-27
 ### Fixed

diff --git a/lib/src/main/java/com/diffplug/spotless/java/RemoveWildcardImportsStep.java b/lib/src/main/java/com/diffplug/spotless/java/RemoveWildcardImportsStep.java
@@ -0,0 +1,17 @@
+package com.diffplug.spotless.java;
+
+import com.diffplug.spotless.FormatterStep;
+import com.diffplug.spotless.generic.ReplaceRegexStep;
+
+/** Removes any wildcard import statements. */
+public final class RemoveWildcardImportsStep {
+	private RemoveWildcardImportsStep() {}
+
+	public static FormatterStep create() {
+		// Matches lines like 'import foo.*;' or 'import static foo.*;'.
+		return ReplaceRegexStep.create(
+			"removeWildcardImports",
+			"(?m)^import\\s+(?:static\\s+)?[^;\\n]*\\*;\\R?",
+			"");
+	}
+}
diff --git a/plugin-gradle/CHANGES.md b/plugin-gradle/CHANGES.md
@@ -3,6 +3,8 @@
 We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (starting after version `3.27.0`).

 ## [Unreleased]
+### Added
+* Added support for removing wildcard imports via `removeWildcardImports` step. ([#2517](https://github.com/diffplug/spotless/pull/2517))

 ## [7.0.4] - 2025-05-27
 ### Fixed

diff --git a/plugin-gradle/README.md b/plugin-gradle/README.md
@@ -188,6 +188,7 @@ spotless {
    importOrderFile('eclipse-import-order.txt') // import order file as exported from eclipse

    removeUnusedImports()
+    removeWildcardImports()

    // Cleanthat will refactor your code, but it may break your style: apply it before your formatter
    cleanthat()          // has its own section below
@@ -227,6 +228,16 @@ spotless {
  removeUnusedImports('cleanthat-javaparser-unnecessaryimport')
 ```

+### removeWildcardImports
+
+```
+spotless {
+  java {
+    removeWildcardImports()
+  }
+}
+```
+
 ### google-java-format

 [homepage](https://github.com/google/google-java-format). [changelog](https://github.com/google/google-java-format/releases).

diff --git a/plugin-gradle/src/main/java/com/diffplug/gradle/spotless/JavaExtension.java b/plugin-gradle/src/main/java/com/diffplug/gradle/spotless/JavaExtension.java
@@ -40,6 +40,7 @@
 import com.diffplug.spotless.java.GoogleJavaFormatStep;
 import com.diffplug.spotless.java.ImportOrderStep;
 import com.diffplug.spotless.java.PalantirJavaFormatStep;
+import com.diffplug.spotless.java.RemoveWildcardImportsStep;
 import com.diffplug.spotless.java.RemoveUnusedImportsStep;

 public class JavaExtension extends FormatExtension implements HasBuiltinDelimiterForLicense, JvmLang {
@@ -151,6 +152,10 @@ public void removeUnusedImports(String formatter) {
 		addStep(RemoveUnusedImportsStep.create(formatter, provisioner()));
 	}

+	public void removeWildcardImports() {
+		addStep(RemoveWildcardImportsStep.create());
+	}
+
 	/** Uses the <a href="https://github.com/google/google-java-format">google-java-format</a> jar to format source code. */
 	public GoogleJavaFormatConfig googleJavaFormat() {
 		return googleJavaFormat(GoogleJavaFormatStep.defaultVersion());

diff --git a/plugin-gradle/src/test/java/com/diffplug/gradle/spotless/RemoveWildcardImportsTest.java b/plugin-gradle/src/test/java/com/diffplug/gradle/spotless/RemoveWildcardImportsTest.java
@@ -0,0 +1,42 @@
+/*
+ * Copyright 2016-2025 DiffPlug
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.diffplug.gradle.spotless;
+
+import java.io.IOException;
+
+import org.junit.jupiter.api.Test;
+
+class RemoveWildcardImportsTest extends GradleIntegrationHarness {
+	@Test
+	void integration() throws IOException {
+		setFile("build.gradle").toLines(
+			"plugins {",
+			"    id 'com.diffplug.spotless'",
+			"}",
+			"repositories { mavenCentral() }",
+			"",
+			"spotless {",
+			"    java {",
+			"        target file('test.java')",
+			"        removeWildcardImports()",
+			"    }",
+			"}");
+
+		setFile("test.java").toResource("java/removewildcardimports/JavaCodeWildcardsUnformatted.test");
+		gradleRunner().withArguments("spotlessApply").build();
+		assertFile("test.java").sameAsResource("java/removewildcardimports/JavaCodeWildcardsFormatted.test");
+	}
+}
diff --git a/plugin-maven/CHANGES.md b/plugin-maven/CHANGES.md
@@ -3,6 +3,8 @@
 We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (starting after version `1.27.0`).

 ## [Unreleased]
+### Added
+* Added support for removing wildcard imports via `removeWildcardImports` step. ([#2517](https://github.com/diffplug/spotless/pull/2517))

 ## [2.44.5] - 2025-05-27
 ### Changed

diff --git a/plugin-maven/README.md b/plugin-maven/README.md
@@ -210,6 +210,7 @@ any other maven phase (i.e. compile) then it can be configured as below;
    </importOrder>

    <removeUnusedImports /> <!-- self-explanatory -->
+    <removeWildcardImports /> <!-- drop any import ending with '*' -->

    <formatAnnotations />  <!-- fixes formatting of type annotations, see below -->

@@ -228,6 +229,12 @@ any other maven phase (i.e. compile) then it can be configured as below;
 </removeUnusedImports>
 ```

+### removeWildcardImports
+
+```xml
+<removeWildcardImports/>
+```
+
 ### google-java-format

 [homepage](https://github.com/google/google-java-format). [changelog](https://github.com/google/google-java-format/releases). [code](https://github.com/diffplug/spotless/blob/main/plugin-maven/src/main/java/com/diffplug/spotless/maven/java/GoogleJavaFormat.java).

diff --git a/plugin-maven/src/main/java/com/diffplug/spotless/maven/java/Java.java b/plugin-maven/src/main/java/com/diffplug/spotless/maven/java/Java.java
@@ -76,6 +76,10 @@ public void addRemoveUnusedImports(RemoveUnusedImports removeUnusedImports) {
 		addStepFactory(removeUnusedImports);
 	}

+	public void addRemoveWildcardImports(RemoveWildcardImports removeWildcardImports) {
+		addStepFactory(removeWildcardImports);
+	}
+
 	public void addFormatAnnotations(FormatAnnotations formatAnnotations) {
 		addStepFactory(formatAnnotations);
 	}

diff --git a/plugin-maven/src/main/java/com/diffplug/spotless/maven/java/RemoveWildcardImports.java b/plugin-maven/src/main/java/com/diffplug/spotless/maven/java/RemoveWildcardImports.java
@@ -0,0 +1,13 @@
+package com.diffplug.spotless.maven.java;
+
+import com.diffplug.spotless.FormatterStep;
+import com.diffplug.spotless.java.RemoveWildcardImportsStep;
+import com.diffplug.spotless.maven.FormatterStepConfig;
+import com.diffplug.spotless.maven.FormatterStepFactory;
+
+public class RemoveWildcardImports implements FormatterStepFactory {
+	@Override
+	public FormatterStep newFormatterStep(FormatterStepConfig config) {
+		return RemoveWildcardImportsStep.create();
+	}
+}
diff --git a/...n-maven/src/test/java/com/diffplug/spotless/maven/java/RemoveWildcardImportsStepTest.java b/...n-maven/src/test/java/com/diffplug/spotless/maven/java/RemoveWildcardImportsStepTest.java
@@ -0,0 +1,18 @@
+package com.diffplug.spotless.maven.java;
+
+import org.junit.jupiter.api.Test;
+
+import com.diffplug.spotless.maven.MavenIntegrationHarness;
+
+class RemoveWildcardImportsStepTest extends MavenIntegrationHarness {
+
+	@Test
+	void testRemoveWildcardImports() throws Exception {
+		writePomWithJavaSteps("<removeWildcardImports/>");
+
+		String path = "src/main/java/test.java";
+		setFile(path).toResource("java/removewildcardimports/JavaCodeWildcardsUnformatted.test");
+		mavenRunner().withArguments("spotless:apply").runNoError();
+		assertFile(path).sameAsResource("java/removewildcardimports/JavaCodeWildcardsFormatted.test");
+	}
+}
diff --git a/testlib/src/main/resources/java/removewildcardimports/JavaCodeWildcardsFormatted.test b/testlib/src/main/resources/java/removewildcardimports/JavaCodeWildcardsFormatted.test
@@ -0,0 +1,4 @@
+import java.util.List;
+import mylib.Helper;
+
+public class Test {}
diff --git a/testlib/src/main/resources/java/removewildcardimports/JavaCodeWildcardsUnformatted.test b/testlib/src/main/resources/java/removewildcardimports/JavaCodeWildcardsUnformatted.test
@@ -0,0 +1,9 @@
+import java.util.*;
+import static java.util.Collections.*;
+import java.util.List;
+import mylib.Helper;
+import io.quarkus.maven.dependency.*;
+import static io.quarkus.vertx.web.Route.HttpMethod.*;
+import static org.springframework.web.reactive.function.BodyInserters.*;
+
+public class Test {}
-Original file line number
+Diff line change
@@ -10,6 +10,8 @@ This document is intended for Spotless developers.
     We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (starting after version `1.27.0`).
     ## [Unreleased]
+    ### Added
+    * Added support for removing wildcard imports via `removeWildcardImports` step. ([#2517](https://github.com/diffplug/spotless/pull/2517))
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     ## [3.1.2] - 2025-05-27
     ### Fixed
-          Expand Down