Fix maven-checkstyle-plugin 3.1.1 reported error

 - with maven-shared-resources v3

maven-compat/src/main/java/org/apache/maven/artifact/ArtifactScopeEnum.java

@@ -50,7 +50,7 @@ int getId()
     /**
      * Helper method to simplify null processing
      */
-    public static final ArtifactScopeEnum checkScope( ArtifactScopeEnum scope )
+    public static ArtifactScopeEnum checkScope( ArtifactScopeEnum scope )
     {
         return scope == null ? DEFAULT_SCOPE : scope;
     }

maven-core/src/main/java/org/apache/maven/artifact/repository/metadata/io/DefaultMetadataReader.java

@@ -60,7 +60,7 @@ public Metadata read( Reader input, Map<String, ?> options )
     {
         Objects.requireNonNull( input, "input cannot be null" );
 
-        try ( final Reader in = input )
+        try ( Reader in = input )
         {
             return new MetadataXpp3Reader().read( in, isStrict( options ) );
         }
@@ -75,7 +75,7 @@ public Metadata read( InputStream input, Map<String, ?> options )
     {
         Objects.requireNonNull( input, "input cannot be null" );
 
-        try ( final InputStream in = input )
+        try ( InputStream in = input )
         {
             return new MetadataXpp3Reader().read( in, isStrict( options ) );
         }

maven-core/src/main/java/org/apache/maven/toolchain/io/DefaultToolchainsReader.java

@@ -61,7 +61,7 @@ public PersistedToolchains read( Reader input, Map<String, ?> options )
     {
         Objects.requireNonNull( input, "input cannot be null" );
 
-        try ( final Reader in = input )
+        try ( Reader in = input )
         {
             return new MavenToolchainsXpp3Reader().read( in, isStrict( options ) );
         }
@@ -77,7 +77,7 @@ public PersistedToolchains read( InputStream input, Map<String, ?> options )
     {
         Objects.requireNonNull( input, "input cannot be null" );
 
-        try ( final InputStream in = input )
+        try ( InputStream in = input )
         {
             return new MavenToolchainsXpp3Reader().read( in, isStrict( options ) );
         }

maven-core/src/main/java/org/apache/maven/toolchain/io/DefaultToolchainsWriter.java

@@ -46,7 +46,7 @@ public void write( Writer output, Map<String, Object> options, PersistedToolchai
         Objects.requireNonNull( output, "output cannot be null" );
         Objects.requireNonNull( toolchains, "toolchains cannot be null" );
 
-        try ( final Writer out = output )
+        try ( Writer out = output )
         {
             new MavenToolchainsXpp3Writer().write( out, toolchains );
         }

maven-model-builder/src/main/java/org/apache/maven/model/io/DefaultModelReader.java

@@ -68,7 +68,7 @@ public Model read( Reader input, Map<String, ?> options )
     {
         Objects.requireNonNull( input, "input cannot be null" );
 
-        try ( final Reader in = input )
+        try ( Reader in = input )
         {
             return read( in, isStrict( options ), getSource( options ) );
         }
@@ -80,7 +80,7 @@ public Model read( InputStream input, Map<String, ?> options )
     {
         Objects.requireNonNull( input, "input cannot be null" );
 
-        try ( final XmlStreamReader in = ReaderFactory.newXmlReader( input ) )
+        try ( XmlStreamReader in = ReaderFactory.newXmlReader( input ) )
         {
             return read( in, isStrict( options ), getSource( options ) );
         }

maven-model-builder/src/main/java/org/apache/maven/model/io/DefaultModelWriter.java

@@ -64,7 +64,7 @@ public void write( Writer output, Map<String, Object> options, Model model )
         Objects.requireNonNull( output, "output cannot be null" );
         Objects.requireNonNull( model, "model cannot be null" );
 
-        try ( final Writer out = output )
+        try ( Writer out = output )
         {
             new MavenXpp3Writer().write( out, model );
         }
@@ -84,7 +84,7 @@ public void write( OutputStream output, Map<String, Object> options, Model model
             encoding = "UTF-8";
         }
 
-        try ( final Writer out = new OutputStreamWriter( output, encoding ) )
+        try ( Writer out = new OutputStreamWriter( output, encoding ) )
         {
             write( out, options, model );
         }

maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/DefaultVersionRangeResolver.java

@@ -244,7 +244,7 @@ private Versioning readVersions( RepositorySystemSession session, RequestTrace t
 
                     if ( metadata.getFile() != null && metadata.getFile().exists() )
                     {
-                        try ( final InputStream in = new FileInputStream( metadata.getFile() ) )
+                        try ( InputStream in = new FileInputStream( metadata.getFile() ) )
                         {
                             versioning = new MetadataXpp3Reader().read( in, false ).getVersioning();
                         }

maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/DefaultVersionResolver.java

@@ -310,7 +310,7 @@ private Versioning readVersions( RepositorySystemSession session, RequestTrace t
 
                     if ( metadata.getFile() != null && metadata.getFile().exists() )
                     {
-                        try ( final InputStream in = new FileInputStream( metadata.getFile() ) )
+                        try ( InputStream in = new FileInputStream( metadata.getFile() ) )
                         {
                             versioning = new MetadataXpp3Reader().read( in, false ).getVersioning();
 

maven-settings-builder/src/main/java/org/apache/maven/settings/io/DefaultSettingsReader.java

@@ -62,7 +62,7 @@ public Settings read( Reader input, Map<String, ?> options )
     {
         Objects.requireNonNull( input, "input cannot be null" );
 
-        try ( final Reader in = input )
+        try ( Reader in = input )
         {
             return new SettingsXpp3Reader().read( in, isStrict( options ) );
         }
@@ -78,7 +78,7 @@ public Settings read( InputStream input, Map<String, ?> options )
     {
         Objects.requireNonNull( input, "input cannot be null" );
 
-        try ( final InputStream in = input )
+        try ( InputStream in = input )
         {
             return new SettingsXpp3Reader().read( in, isStrict( options ) );
         }

maven-settings-builder/src/main/java/org/apache/maven/settings/io/DefaultSettingsWriter.java

@@ -64,7 +64,7 @@ public void write( Writer output, Map<String, Object> options, Settings settings
         Objects.requireNonNull( output, "output cannot be null" );
         Objects.requireNonNull( settings, "settings cannot be null" );
 
-        try ( final Writer out = output )
+        try ( Writer out = output )
         {
             new SettingsXpp3Writer().write( out, settings );
         }
@@ -84,7 +84,7 @@ public void write( OutputStream output, Map<String, Object> options, Settings se
             encoding = "UTF-8";
         }
 
-        try ( final Writer out = new OutputStreamWriter( output, encoding ) )
+        try ( Writer out = new OutputStreamWriter( output, encoding ) )
         {
             write( out, options, settings );
         }