chore: replace formatter with spotless [skip ci] (#6512) (CP: 23.4)

(cherry picked from commit aa143ec)

README.md

@@ -129,7 +129,7 @@ If you need to make any modification in a component, consider whether it is conv
 
 ### Formatting
 
-Run `mvn formatter:format` before pushing your code.
+Run `mvn spotless:apply` before pushing your code.
 
 ## Bug and enhancement tickets
 - Bug tickets and enhancement requests for the web component implementations should go to the Vaadin web components monorepo https://github.com/vaadin/web-components/.

pom.xml

@@ -27,6 +27,7 @@
         <maven.failsafe.plugin.version>2.22.2</maven.failsafe.plugin.version>
         <maven.resources.plugin.version>3.3.0</maven.resources.plugin.version>
         <maven.deploy.plugin.version>2.8.2</maven.deploy.plugin.version>
+        <spotless.plugin.version>2.43.0</spotless.plugin.version>
         <failsafe.forkCount>4</failsafe.forkCount>
         <com.vaadin.tests.SharedBrowser.reuseBrowser>true</com.vaadin.tests.SharedBrowser.reuseBrowser>
         <com.vaadin.testbench.Parameters.testsInParallel>1</com.vaadin.testbench.Parameters.testsInParallel>
@@ -490,12 +491,15 @@
         </pluginManagement>
         <plugins>
             <plugin>
-                <groupId>net.revelc.code.formatter</groupId>
-                <artifactId>formatter-maven-plugin</artifactId>
-                <version>2.20.0</version>
+                <groupId>com.diffplug.spotless</groupId>
+                <artifactId>spotless-maven-plugin</artifactId>
+                <version>${spotless.plugin.version}</version>
                 <configuration>
-                    <configFile>https://raw.githubusercontent.com/vaadin/flow/master/eclipse/VaadinJavaConventions.xml</configFile>
-                    <skipHtmlFormatting>true</skipHtmlFormatting>
+                    <java>
+                        <eclipse>
+                            <file>https://raw.githubusercontent.com/vaadin/flow/main/eclipse/VaadinJavaConventions.xml</file>
+                        </eclipse>
+                    </java>
                 </configuration>
             </plugin>
         </plugins>

vaadin-spreadsheet-flow-parent/vaadin-spreadsheet-flow-client/src/main/java/com/vaadin/addon/spreadsheet/client/SheetJsniUtil.java

@@ -43,7 +43,7 @@ public final native void parseColRow(String str)
         }
         [email protected]::parsedRow = r;
         [email protected]::parsedCol = c;
-
+    
     }-*/;
 
     public int getParsedCol() {

vaadin-spreadsheet-flow-parent/vaadin-spreadsheet-flow-client/src/main/java/com/vaadin/client/ApplicationConfiguration.java

@@ -460,17 +460,17 @@ private static native JsoConfiguration init(String appId,
         jsoConfiguration.getConfig = function(name) {
             return this[name];
         }
-
+    
         jsoConfiguration.rootElement = rootElement;
-
+    
         jsoConfiguration.versionInfo = {
             vaadinVersion: '8.0.0'
         };
-
+    
         jsoConfiguration.theme = 'valo';
-
+    
         $wnd.vaadin.clients = {};
-
+    
         $wnd.vaadin.gwtStatsEvents = false;
      }-*/;