Fix checkstyle violation

Closes gh-14125

Author: snicoll

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/web/embedded/jetty/JettyReactiveWebServerFactoryTests.java

@@ -68,7 +68,7 @@ public void jettyCustomizersShouldBeInvoked() {
 		HttpHandler handler = mock(HttpHandler.class);
 		JettyReactiveWebServerFactory factory = getFactory();
 		JettyServerCustomizer[] configurations = new JettyServerCustomizer[4];
-		Arrays.setAll(configurations, i -> mock(JettyServerCustomizer.class));
+		Arrays.setAll(configurations, (i) -> mock(JettyServerCustomizer.class));
 		factory.setServerCustomizers(Arrays.asList(configurations[0], configurations[1]));
 		factory.addServerCustomizers(configurations[2], configurations[3]);
 		this.webServer = factory.getWebServer(handler);

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/web/embedded/jetty/JettyServletWebServerFactoryTests.java

@@ -75,7 +75,7 @@ protected JettyServletWebServerFactory getFactory() {
 	public void jettyConfigurations() throws Exception {
 		JettyServletWebServerFactory factory = getFactory();
 		Configuration[] configurations = new Configuration[4];
-		Arrays.setAll(configurations, i -> mock(Configuration.class));
+		Arrays.setAll(configurations, (i) -> mock(Configuration.class));
 		factory.setConfigurations(Arrays.asList(configurations[0], configurations[1]));
 		factory.addConfigurations(configurations[2], configurations[3]);
 		this.webServer = factory.getWebServer();
@@ -89,7 +89,7 @@ public void jettyConfigurations() throws Exception {
 	public void jettyCustomizations() {
 		JettyServletWebServerFactory factory = getFactory();
 		JettyServerCustomizer[] configurations = new JettyServerCustomizer[4];
-		Arrays.setAll(configurations, i -> mock(JettyServerCustomizer.class));
+		Arrays.setAll(configurations, (i) -> mock(JettyServerCustomizer.class));
 		factory.setServerCustomizers(Arrays.asList(configurations[0], configurations[1]));
 		factory.addServerCustomizers(configurations[2], configurations[3]);
 		this.webServer = factory.getWebServer();

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/web/embedded/tomcat/TomcatReactiveWebServerFactoryTests.java

@@ -54,7 +54,7 @@ protected TomcatReactiveWebServerFactory getFactory() {
 	public void tomcatCustomizers() {
 		TomcatReactiveWebServerFactory factory = getFactory();
 		TomcatContextCustomizer[] listeners = new TomcatContextCustomizer[4];
-		Arrays.setAll(listeners, i -> mock(TomcatContextCustomizer.class));
+		Arrays.setAll(listeners, (i) -> mock(TomcatContextCustomizer.class));
 		factory.setTomcatContextCustomizers(Arrays.asList(listeners[0], listeners[1]));
 		factory.addContextCustomizers(listeners[2], listeners[3]);
 		this.webServer = factory.getWebServer(mock(HttpHandler.class));
@@ -86,7 +86,7 @@ public void defaultTomcatListeners() {
 	public void tomcatListeners() {
 		TomcatReactiveWebServerFactory factory = getFactory();
 		LifecycleListener[] listeners = new LifecycleListener[4];
-		Arrays.setAll(listeners, i -> mock(LifecycleListener.class));
+		Arrays.setAll(listeners, (i) -> mock(LifecycleListener.class));
 		factory.setContextLifecycleListeners(Arrays.asList(listeners[0], listeners[1]));
 		factory.addContextLifecycleListeners(listeners[2], listeners[3]);
 		this.webServer = factory.getWebServer(mock(HttpHandler.class));
@@ -117,7 +117,7 @@ public void tomcatConnectorCustomizersShouldBeInvoked() {
 		TomcatReactiveWebServerFactory factory = getFactory();
 		HttpHandler handler = mock(HttpHandler.class);
 		TomcatConnectorCustomizer[] listeners = new TomcatConnectorCustomizer[4];
-		Arrays.setAll(listeners, i -> mock(TomcatConnectorCustomizer.class));
+		Arrays.setAll(listeners, (i) -> mock(TomcatConnectorCustomizer.class));
 		factory.setTomcatConnectorCustomizers(Arrays.asList(listeners[0], listeners[1]));
 		factory.addConnectorCustomizers(listeners[2], listeners[3]);
 		this.webServer = factory.getWebServer(handler);

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/web/embedded/tomcat/TomcatServletWebServerFactoryTests.java

@@ -121,7 +121,7 @@ public void defaultTomcatListeners() {
 	public void tomcatListeners() {
 		TomcatServletWebServerFactory factory = getFactory();
 		LifecycleListener[] listeners = new LifecycleListener[4];
-		Arrays.setAll(listeners, i -> mock(LifecycleListener.class));
+		Arrays.setAll(listeners, (i) -> mock(LifecycleListener.class));
 		factory.setContextLifecycleListeners(Arrays.asList(listeners[0], listeners[1]));
 		factory.addContextLifecycleListeners(listeners[2], listeners[3]);
 		this.webServer = factory.getWebServer();
@@ -135,7 +135,7 @@ public void tomcatListeners() {
 	public void tomcatCustomizers() {
 		TomcatServletWebServerFactory factory = getFactory();
 		TomcatContextCustomizer[] listeners = new TomcatContextCustomizer[4];
-		Arrays.setAll(listeners, i -> mock(TomcatContextCustomizer.class));
+		Arrays.setAll(listeners, (i) -> mock(TomcatContextCustomizer.class));
 		factory.setTomcatContextCustomizers(Arrays.asList(listeners[0], listeners[1]));
 		factory.addContextCustomizers(listeners[2], listeners[3]);
 		this.webServer = factory.getWebServer();
@@ -160,7 +160,7 @@ public void contextIsAddedToHostBeforeCustomizersAreCalled() {
 	public void tomcatConnectorCustomizers() {
 		TomcatServletWebServerFactory factory = getFactory();
 		TomcatConnectorCustomizer[] listeners = new TomcatConnectorCustomizer[4];
-		Arrays.setAll(listeners, i -> mock(TomcatConnectorCustomizer.class));
+		Arrays.setAll(listeners, (i) -> mock(TomcatConnectorCustomizer.class));
 		factory.setTomcatConnectorCustomizers(Arrays.asList(listeners[0], listeners[1]));
 		factory.addConnectorCustomizers(listeners[2], listeners[3]);
 		this.webServer = factory.getWebServer();
@@ -174,7 +174,7 @@ public void tomcatConnectorCustomizers() {
 	public void tomcatAdditionalConnectors() {
 		TomcatServletWebServerFactory factory = getFactory();
 		Connector[] listeners = new Connector[4];
-		Arrays.setAll(listeners, i -> stoppedConnector());
+		Arrays.setAll(listeners, (i) -> stoppedConnector());
 		factory.addAdditionalTomcatConnectors(listeners);
 		this.webServer = factory.getWebServer();
 		Map<Service, Connector[]> connectors = ((TomcatWebServer) this.webServer)

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/web/embedded/undertow/UndertowReactiveWebServerFactoryTests.java

@@ -77,7 +77,7 @@ public void builderCustomizersShouldBeInvoked() {
 		UndertowReactiveWebServerFactory factory = getFactory();
 		HttpHandler handler = mock(HttpHandler.class);
 		UndertowBuilderCustomizer[] customizers = new UndertowBuilderCustomizer[4];
-		Arrays.setAll(customizers, i -> mock(UndertowBuilderCustomizer.class));
+		Arrays.setAll(customizers, (i) -> mock(UndertowBuilderCustomizer.class));
 		factory.setBuilderCustomizers(Arrays.asList(customizers[0], customizers[1]));
 		factory.addBuilderCustomizers(customizers[2], customizers[3]);
 		this.webServer = factory.getWebServer(handler);

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/web/embedded/undertow/UndertowServletWebServerFactoryTests.java

@@ -102,7 +102,7 @@ public void addNullAddBuilderCustomizersThrows() {
 	public void builderCustomizers() {
 		UndertowServletWebServerFactory factory = getFactory();
 		UndertowBuilderCustomizer[] customizers = new UndertowBuilderCustomizer[4];
-		Arrays.setAll(customizers, i -> mock(UndertowBuilderCustomizer.class));
+		Arrays.setAll(customizers, (i) -> mock(UndertowBuilderCustomizer.class));
 		factory.setBuilderCustomizers(Arrays.asList(customizers[0], customizers[1]));
 		factory.addBuilderCustomizers(customizers[2], customizers[3]);
 		this.webServer = factory.getWebServer();
@@ -132,7 +132,7 @@ public void addNullAddDeploymentInfoCustomizersThrows() {
 	public void deploymentInfo() {
 		UndertowServletWebServerFactory factory = getFactory();
 		UndertowDeploymentInfoCustomizer[] customizers = new UndertowDeploymentInfoCustomizer[4];
-		Arrays.setAll(customizers, i -> mock(UndertowDeploymentInfoCustomizer.class));
+		Arrays.setAll(customizers, (i) -> mock(UndertowDeploymentInfoCustomizer.class));
 		factory.setDeploymentInfoCustomizers(
 				Arrays.asList(customizers[0], customizers[1]));
 		factory.addDeploymentInfoCustomizers(customizers[2], customizers[3]);

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/web/servlet/server/AbstractServletWebServerFactoryTests.java

@@ -305,7 +305,7 @@ public void contextRootPathMustNotBeSlash() {
 	public void multipleConfigurations() throws Exception {
 		AbstractServletWebServerFactory factory = getFactory();
 		ServletContextInitializer[] initializers = new ServletContextInitializer[6];
-		Arrays.setAll(initializers, i -> mock(ServletContextInitializer.class));
+		Arrays.setAll(initializers, (i) -> mock(ServletContextInitializer.class));
 		factory.setInitializers(Arrays.asList(initializers[2], initializers[3]));
 		factory.addInitializers(initializers[4], initializers[5]);
 		this.webServer = factory.getWebServer(initializers[0], initializers[1]);