Fix checkstyle violations for main module in 1.3.x

Issue gh-1624

oauth2-authorization-server/src/main/java/org/springframework/security/oauth2/server/authorization/authentication/OAuth2TokenExchangeAuthenticationProvider.java

@@ -52,8 +52,6 @@ import org.springframework.util.Assert;
 import org.springframework.util.CollectionUtils;
 import org.springframework.util.StringUtils;
 
-import static org.springframework.security.oauth2.server.authorization.authentication.OAuth2AuthenticationProviderUtils.getAuthenticatedClientElseThrowInvalidClient;
-
 /**
  * An {@link AuthenticationProvider} implementation for the OAuth 2.0 Token Exchange
  * Grant.
@@ -103,8 +101,8 @@ public final class OAuth2TokenExchangeAuthenticationProvider implements Authenti
 	public Authentication authenticate(Authentication authentication) throws AuthenticationException {
 		OAuth2TokenExchangeAuthenticationToken tokenExchangeAuthentication = (OAuth2TokenExchangeAuthenticationToken) authentication;
 
-		OAuth2ClientAuthenticationToken clientPrincipal = getAuthenticatedClientElseThrowInvalidClient(
-				tokenExchangeAuthentication);
+		OAuth2ClientAuthenticationToken clientPrincipal = OAuth2AuthenticationProviderUtils
+			.getAuthenticatedClientElseThrowInvalidClient(tokenExchangeAuthentication);
 		RegisteredClient registeredClient = clientPrincipal.getRegisteredClient();
 
 		if (this.logger.isTraceEnabled()) {

oauth2-authorization-server/src/main/java/org/springframework/security/oauth2/server/authorization/authentication/OAuth2TokenExchangeAuthenticationToken.java

@@ -80,10 +80,10 @@ public class OAuth2TokenExchangeAuthenticationToken extends OAuth2AuthorizationG
 		this.actorToken = actorToken;
 		this.actorTokenType = actorTokenType;
 		this.resources = Collections
-			.unmodifiableSet(resources != null ? new LinkedHashSet<>(resources) : Collections.emptySet());
+			.unmodifiableSet((resources != null) ? new LinkedHashSet<>(resources) : Collections.emptySet());
 		this.audiences = Collections
-			.unmodifiableSet(audiences != null ? new LinkedHashSet<>(audiences) : Collections.emptySet());
-		this.scopes = Collections.unmodifiableSet(scopes != null ? new HashSet<>(scopes) : Collections.emptySet());
+			.unmodifiableSet((audiences != null) ? new LinkedHashSet<>(audiences) : Collections.emptySet());
+		this.scopes = Collections.unmodifiableSet((scopes != null) ? new HashSet<>(scopes) : Collections.emptySet());
 	}
 
 	/**

oauth2-authorization-server/src/main/java/org/springframework/security/oauth2/server/authorization/authentication/OAuth2TokenExchangeCompositeAuthenticationToken.java

@@ -41,7 +41,7 @@ public class OAuth2TokenExchangeCompositeAuthenticationToken extends AbstractAut
 
 	public OAuth2TokenExchangeCompositeAuthenticationToken(Authentication subject,
 			List<OAuth2TokenExchangeActor> actors) {
-		super(subject != null ? subject.getAuthorities() : null);
+		super((subject != null) ? subject.getAuthorities() : null);
 		Assert.notNull(subject, "subject cannot be null");
 		Assert.notNull(actors, "actors cannot be null");
 		this.subject = subject;

oauth2-authorization-server/src/main/java/org/springframework/security/oauth2/server/authorization/authentication/X509SelfSignedCertificateVerifier.java

@@ -108,7 +108,7 @@ final class X509SelfSignedCertificateVerifier implements Consumer<OAuth2ClientAu
 		throw new OAuth2AuthenticationException(error, error.toString(), cause);
 	}
 
-	private static class JwkSetSupplier implements Function<RegisteredClient, JWKSet> {
+	private static final class JwkSetSupplier implements Function<RegisteredClient, JWKSet> {
 
 		private static final MediaType APPLICATION_JWK_SET_JSON = new MediaType("application", "jwk-set+json");
 
@@ -168,7 +168,7 @@ final class X509SelfSignedCertificateVerifier implements Consumer<OAuth2ClientAu
 			return jwkSet;
 		}
 
-		private class JwkSetHolder implements Supplier<JWKSet> {
+		private final class JwkSetHolder implements Supplier<JWKSet> {
 
 			private final ReentrantReadWriteLock rwLock = new ReentrantReadWriteLock();
 

oauth2-authorization-server/src/main/java/org/springframework/security/oauth2/server/authorization/config/annotation/web/configurers/DefaultOAuth2TokenCustomizers.java

@@ -44,6 +44,9 @@ import org.springframework.security.oauth2.server.authorization.token.OAuth2Toke
  */
 final class DefaultOAuth2TokenCustomizers {
 
+	private DefaultOAuth2TokenCustomizers() {
+	}
+
 	static OAuth2TokenCustomizer<JwtEncodingContext> jwtCustomizer() {
 		return (context) -> context.getClaims().claims((claims) -> customize(context, claims));
 	}

oauth2-authorization-server/src/main/java/org/springframework/security/oauth2/server/authorization/config/annotation/web/configurers/OAuth2AuthorizationEndpointConfigurer.java

@@ -51,8 +51,6 @@ import org.springframework.security.web.util.matcher.RequestMatcher;
 import org.springframework.util.Assert;
 import org.springframework.util.StringUtils;
 
-import static org.springframework.security.oauth2.server.authorization.config.annotation.web.configurers.OAuth2ConfigurerUtils.withMultipleIssuersPattern;
-
 /**
  * Configurer for the OAuth 2.0 Authorization Endpoint.
  *
@@ -240,7 +238,8 @@ public final class OAuth2AuthorizationEndpointConfigurer extends AbstractOAuth2C
 		AuthorizationServerSettings authorizationServerSettings = OAuth2ConfigurerUtils
 			.getAuthorizationServerSettings(httpSecurity);
 		String authorizationEndpointUri = authorizationServerSettings.isMultipleIssuersAllowed()
-				? withMultipleIssuersPattern(authorizationServerSettings.getAuthorizationEndpoint())
+				? OAuth2ConfigurerUtils
+					.withMultipleIssuersPattern(authorizationServerSettings.getAuthorizationEndpoint())
 				: authorizationServerSettings.getAuthorizationEndpoint();
 		this.requestMatcher = new OrRequestMatcher(
 				new AntPathRequestMatcher(authorizationEndpointUri, HttpMethod.GET.name()),
@@ -261,7 +260,8 @@ public final class OAuth2AuthorizationEndpointConfigurer extends AbstractOAuth2C
 		AuthorizationServerSettings authorizationServerSettings = OAuth2ConfigurerUtils
 			.getAuthorizationServerSettings(httpSecurity);
 		String authorizationEndpointUri = authorizationServerSettings.isMultipleIssuersAllowed()
-				? withMultipleIssuersPattern(authorizationServerSettings.getAuthorizationEndpoint())
+				? OAuth2ConfigurerUtils
+					.withMultipleIssuersPattern(authorizationServerSettings.getAuthorizationEndpoint())
 				: authorizationServerSettings.getAuthorizationEndpoint();
 		OAuth2AuthorizationEndpointFilter authorizationEndpointFilter = new OAuth2AuthorizationEndpointFilter(
 				authenticationManager, authorizationEndpointUri);

oauth2-authorization-server/src/main/java/org/springframework/security/oauth2/server/authorization/config/annotation/web/configurers/OAuth2AuthorizationServerConfigurer.java

@@ -56,8 +56,6 @@ import org.springframework.security.web.util.matcher.OrRequestMatcher;
 import org.springframework.security.web.util.matcher.RequestMatcher;
 import org.springframework.util.Assert;
 
-import static org.springframework.security.oauth2.server.authorization.config.annotation.web.configurers.OAuth2ConfigurerUtils.withMultipleIssuersPattern;
-
 /**
  * An {@link AbstractHttpConfigurer} for OAuth 2.0 Authorization Server support.
  *
@@ -327,7 +325,7 @@ public final class OAuth2AuthorizationServerConfigurer
 			requestMatchers.add(configurer.getRequestMatcher());
 		});
 		String jwkSetEndpointUri = authorizationServerSettings.isMultipleIssuersAllowed()
-				? withMultipleIssuersPattern(authorizationServerSettings.getJwkSetEndpoint())
+				? OAuth2ConfigurerUtils.withMultipleIssuersPattern(authorizationServerSettings.getJwkSetEndpoint())
 				: authorizationServerSettings.getJwkSetEndpoint();
 		requestMatchers.add(new AntPathRequestMatcher(jwkSetEndpointUri, HttpMethod.GET.name()));
 		this.endpointsMatcher = new OrRequestMatcher(requestMatchers);
@@ -357,7 +355,7 @@ public final class OAuth2AuthorizationServerConfigurer
 		JWKSource<com.nimbusds.jose.proc.SecurityContext> jwkSource = OAuth2ConfigurerUtils.getJwkSource(httpSecurity);
 		if (jwkSource != null) {
 			String jwkSetEndpointUri = authorizationServerSettings.isMultipleIssuersAllowed()
-					? withMultipleIssuersPattern(authorizationServerSettings.getJwkSetEndpoint())
+					? OAuth2ConfigurerUtils.withMultipleIssuersPattern(authorizationServerSettings.getJwkSetEndpoint())
 					: authorizationServerSettings.getJwkSetEndpoint();
 			NimbusJwkSetEndpointFilter jwkSetEndpointFilter = new NimbusJwkSetEndpointFilter(jwkSource,
 					jwkSetEndpointUri);

oauth2-authorization-server/src/main/java/org/springframework/security/oauth2/server/authorization/config/annotation/web/configurers/OAuth2ClientAuthenticationConfigurer.java

@@ -53,8 +53,6 @@ import org.springframework.security.web.util.matcher.OrRequestMatcher;
 import org.springframework.security.web.util.matcher.RequestMatcher;
 import org.springframework.util.Assert;
 
-import static org.springframework.security.oauth2.server.authorization.config.annotation.web.configurers.OAuth2ConfigurerUtils.withMultipleIssuersPattern;
-
 /**
  * Configurer for OAuth 2.0 Client Authentication.
  *
@@ -184,16 +182,19 @@ public final class OAuth2ClientAuthenticationConfigurer extends AbstractOAuth2Co
 		AuthorizationServerSettings authorizationServerSettings = OAuth2ConfigurerUtils
 			.getAuthorizationServerSettings(httpSecurity);
 		String tokenEndpointUri = authorizationServerSettings.isMultipleIssuersAllowed()
-				? withMultipleIssuersPattern(authorizationServerSettings.getTokenEndpoint())
+				? OAuth2ConfigurerUtils.withMultipleIssuersPattern(authorizationServerSettings.getTokenEndpoint())
 				: authorizationServerSettings.getTokenEndpoint();
 		String tokenIntrospectionEndpointUri = authorizationServerSettings.isMultipleIssuersAllowed()
-				? withMultipleIssuersPattern(authorizationServerSettings.getTokenIntrospectionEndpoint())
+				? OAuth2ConfigurerUtils
+					.withMultipleIssuersPattern(authorizationServerSettings.getTokenIntrospectionEndpoint())
 				: authorizationServerSettings.getTokenIntrospectionEndpoint();
 		String tokenRevocationEndpointUri = authorizationServerSettings.isMultipleIssuersAllowed()
-				? withMultipleIssuersPattern(authorizationServerSettings.getTokenRevocationEndpoint())
+				? OAuth2ConfigurerUtils
+					.withMultipleIssuersPattern(authorizationServerSettings.getTokenRevocationEndpoint())
 				: authorizationServerSettings.getTokenRevocationEndpoint();
 		String deviceAuthorizationEndpointUri = authorizationServerSettings.isMultipleIssuersAllowed()
-				? withMultipleIssuersPattern(authorizationServerSettings.getDeviceAuthorizationEndpoint())
+				? OAuth2ConfigurerUtils
+					.withMultipleIssuersPattern(authorizationServerSettings.getDeviceAuthorizationEndpoint())
 				: authorizationServerSettings.getDeviceAuthorizationEndpoint();
 		this.requestMatcher = new OrRequestMatcher(new AntPathRequestMatcher(tokenEndpointUri, HttpMethod.POST.name()),
 				new AntPathRequestMatcher(tokenIntrospectionEndpointUri, HttpMethod.POST.name()),

oauth2-authorization-server/src/main/java/org/springframework/security/oauth2/server/authorization/config/annotation/web/configurers/OAuth2DeviceAuthorizationEndpointConfigurer.java

@@ -45,8 +45,6 @@ import org.springframework.security.web.util.matcher.RequestMatcher;
 import org.springframework.util.Assert;
 import org.springframework.util.StringUtils;
 
-import static org.springframework.security.oauth2.server.authorization.config.annotation.web.configurers.OAuth2ConfigurerUtils.withMultipleIssuersPattern;
-
 /**
  * Configurer for the OAuth 2.0 Device Authorization Endpoint.
  *
@@ -201,7 +199,8 @@ public final class OAuth2DeviceAuthorizationEndpointConfigurer extends AbstractO
 		AuthorizationServerSettings authorizationServerSettings = OAuth2ConfigurerUtils
 			.getAuthorizationServerSettings(builder);
 		String deviceAuthorizationEndpointUri = authorizationServerSettings.isMultipleIssuersAllowed()
-				? withMultipleIssuersPattern(authorizationServerSettings.getDeviceAuthorizationEndpoint())
+				? OAuth2ConfigurerUtils
+					.withMultipleIssuersPattern(authorizationServerSettings.getDeviceAuthorizationEndpoint())
 				: authorizationServerSettings.getDeviceAuthorizationEndpoint();
 		this.requestMatcher = new AntPathRequestMatcher(deviceAuthorizationEndpointUri, HttpMethod.POST.name());
 
@@ -221,7 +220,8 @@ public final class OAuth2DeviceAuthorizationEndpointConfigurer extends AbstractO
 			.getAuthorizationServerSettings(builder);
 
 		String deviceAuthorizationEndpointUri = authorizationServerSettings.isMultipleIssuersAllowed()
-				? withMultipleIssuersPattern(authorizationServerSettings.getDeviceAuthorizationEndpoint())
+				? OAuth2ConfigurerUtils
+					.withMultipleIssuersPattern(authorizationServerSettings.getDeviceAuthorizationEndpoint())
 				: authorizationServerSettings.getDeviceAuthorizationEndpoint();
 		OAuth2DeviceAuthorizationEndpointFilter deviceAuthorizationEndpointFilter = new OAuth2DeviceAuthorizationEndpointFilter(
 				authenticationManager, deviceAuthorizationEndpointUri);

oauth2-authorization-server/src/main/java/org/springframework/security/oauth2/server/authorization/config/annotation/web/configurers/OAuth2DeviceVerificationEndpointConfigurer.java

@@ -50,8 +50,6 @@ import org.springframework.security.web.util.matcher.RequestMatcher;
 import org.springframework.util.Assert;
 import org.springframework.util.StringUtils;
 
-import static org.springframework.security.oauth2.server.authorization.config.annotation.web.configurers.OAuth2ConfigurerUtils.withMultipleIssuersPattern;
-
 /**
  * Configurer for the OAuth 2.0 Device Verification Endpoint.
  *
@@ -236,7 +234,8 @@ public final class OAuth2DeviceVerificationEndpointConfigurer extends AbstractOA
 		AuthorizationServerSettings authorizationServerSettings = OAuth2ConfigurerUtils
 			.getAuthorizationServerSettings(builder);
 		String deviceVerificationEndpointUri = authorizationServerSettings.isMultipleIssuersAllowed()
-				? withMultipleIssuersPattern(authorizationServerSettings.getDeviceVerificationEndpoint())
+				? OAuth2ConfigurerUtils
+					.withMultipleIssuersPattern(authorizationServerSettings.getDeviceVerificationEndpoint())
 				: authorizationServerSettings.getDeviceVerificationEndpoint();
 		this.requestMatcher = new OrRequestMatcher(
 				new AntPathRequestMatcher(deviceVerificationEndpointUri, HttpMethod.GET.name()),
@@ -258,7 +257,8 @@ public final class OAuth2DeviceVerificationEndpointConfigurer extends AbstractOA
 			.getAuthorizationServerSettings(builder);
 
 		String deviceVerificationEndpointUri = authorizationServerSettings.isMultipleIssuersAllowed()
-				? withMultipleIssuersPattern(authorizationServerSettings.getDeviceVerificationEndpoint())
+				? OAuth2ConfigurerUtils
+					.withMultipleIssuersPattern(authorizationServerSettings.getDeviceVerificationEndpoint())
 				: authorizationServerSettings.getDeviceVerificationEndpoint();
 		OAuth2DeviceVerificationEndpointFilter deviceVerificationEndpointFilter = new OAuth2DeviceVerificationEndpointFilter(
 				authenticationManager, deviceVerificationEndpointUri);

oauth2-authorization-server/src/main/java/org/springframework/security/oauth2/server/authorization/config/annotation/web/configurers/OAuth2TokenEndpointConfigurer.java

@@ -56,8 +56,6 @@ import org.springframework.security.web.util.matcher.AntPathRequestMatcher;
 import org.springframework.security.web.util.matcher.RequestMatcher;
 import org.springframework.util.Assert;
 
-import static org.springframework.security.oauth2.server.authorization.config.annotation.web.configurers.OAuth2ConfigurerUtils.withMultipleIssuersPattern;
-
 /**
  * Configurer for the OAuth 2.0 Token Endpoint.
  *
@@ -189,7 +187,7 @@ public final class OAuth2TokenEndpointConfigurer extends AbstractOAuth2Configure
 		AuthorizationServerSettings authorizationServerSettings = OAuth2ConfigurerUtils
 			.getAuthorizationServerSettings(httpSecurity);
 		String tokenEndpointUri = authorizationServerSettings.isMultipleIssuersAllowed()
-				? withMultipleIssuersPattern(authorizationServerSettings.getTokenEndpoint())
+				? OAuth2ConfigurerUtils.withMultipleIssuersPattern(authorizationServerSettings.getTokenEndpoint())
 				: authorizationServerSettings.getTokenEndpoint();
 		this.requestMatcher = new AntPathRequestMatcher(tokenEndpointUri, HttpMethod.POST.name());
 
@@ -209,7 +207,7 @@ public final class OAuth2TokenEndpointConfigurer extends AbstractOAuth2Configure
 			.getAuthorizationServerSettings(httpSecurity);
 
 		String tokenEndpointUri = authorizationServerSettings.isMultipleIssuersAllowed()
-				? withMultipleIssuersPattern(authorizationServerSettings.getTokenEndpoint())
+				? OAuth2ConfigurerUtils.withMultipleIssuersPattern(authorizationServerSettings.getTokenEndpoint())
 				: authorizationServerSettings.getTokenEndpoint();
 		OAuth2TokenEndpointFilter tokenEndpointFilter = new OAuth2TokenEndpointFilter(authenticationManager,
 				tokenEndpointUri);

oauth2-authorization-server/src/main/java/org/springframework/security/oauth2/server/authorization/config/annotation/web/configurers/OAuth2TokenIntrospectionEndpointConfigurer.java

@@ -43,8 +43,6 @@ import org.springframework.security.web.util.matcher.AntPathRequestMatcher;
 import org.springframework.security.web.util.matcher.RequestMatcher;
 import org.springframework.util.Assert;
 
-import static org.springframework.security.oauth2.server.authorization.config.annotation.web.configurers.OAuth2ConfigurerUtils.withMultipleIssuersPattern;
-
 /**
  * Configurer for the OAuth 2.0 Token Introspection Endpoint.
  *
@@ -184,7 +182,8 @@ public final class OAuth2TokenIntrospectionEndpointConfigurer extends AbstractOA
 		AuthorizationServerSettings authorizationServerSettings = OAuth2ConfigurerUtils
 			.getAuthorizationServerSettings(httpSecurity);
 		String tokenIntrospectionEndpointUri = authorizationServerSettings.isMultipleIssuersAllowed()
-				? withMultipleIssuersPattern(authorizationServerSettings.getTokenIntrospectionEndpoint())
+				? OAuth2ConfigurerUtils
+					.withMultipleIssuersPattern(authorizationServerSettings.getTokenIntrospectionEndpoint())
 				: authorizationServerSettings.getTokenIntrospectionEndpoint();
 		this.requestMatcher = new AntPathRequestMatcher(tokenIntrospectionEndpointUri, HttpMethod.POST.name());
 
@@ -203,7 +202,8 @@ public final class OAuth2TokenIntrospectionEndpointConfigurer extends AbstractOA
 		AuthorizationServerSettings authorizationServerSettings = OAuth2ConfigurerUtils
 			.getAuthorizationServerSettings(httpSecurity);
 		String tokenIntrospectionEndpointUri = authorizationServerSettings.isMultipleIssuersAllowed()
-				? withMultipleIssuersPattern(authorizationServerSettings.getTokenIntrospectionEndpoint())
+				? OAuth2ConfigurerUtils
+					.withMultipleIssuersPattern(authorizationServerSettings.getTokenIntrospectionEndpoint())
 				: authorizationServerSettings.getTokenIntrospectionEndpoint();
 		OAuth2TokenIntrospectionEndpointFilter introspectionEndpointFilter = new OAuth2TokenIntrospectionEndpointFilter(
 				authenticationManager, tokenIntrospectionEndpointUri);

oauth2-authorization-server/src/main/java/org/springframework/security/oauth2/server/authorization/config/annotation/web/configurers/OAuth2TokenRevocationEndpointConfigurer.java

@@ -42,8 +42,6 @@ import org.springframework.security.web.util.matcher.AntPathRequestMatcher;
 import org.springframework.security.web.util.matcher.RequestMatcher;
 import org.springframework.util.Assert;
 
-import static org.springframework.security.oauth2.server.authorization.config.annotation.web.configurers.OAuth2ConfigurerUtils.withMultipleIssuersPattern;
-
 /**
  * Configurer for the OAuth 2.0 Token Revocation Endpoint.
  *
@@ -183,7 +181,8 @@ public final class OAuth2TokenRevocationEndpointConfigurer extends AbstractOAuth
 		AuthorizationServerSettings authorizationServerSettings = OAuth2ConfigurerUtils
 			.getAuthorizationServerSettings(httpSecurity);
 		String tokenRevocationEndpointUri = authorizationServerSettings.isMultipleIssuersAllowed()
-				? withMultipleIssuersPattern(authorizationServerSettings.getTokenRevocationEndpoint())
+				? OAuth2ConfigurerUtils
+					.withMultipleIssuersPattern(authorizationServerSettings.getTokenRevocationEndpoint())
 				: authorizationServerSettings.getTokenRevocationEndpoint();
 		this.requestMatcher = new AntPathRequestMatcher(tokenRevocationEndpointUri, HttpMethod.POST.name());
 
@@ -203,7 +202,8 @@ public final class OAuth2TokenRevocationEndpointConfigurer extends AbstractOAuth
 			.getAuthorizationServerSettings(httpSecurity);
 
 		String tokenRevocationEndpointUri = authorizationServerSettings.isMultipleIssuersAllowed()
-				? withMultipleIssuersPattern(authorizationServerSettings.getTokenRevocationEndpoint())
+				? OAuth2ConfigurerUtils
+					.withMultipleIssuersPattern(authorizationServerSettings.getTokenRevocationEndpoint())
 				: authorizationServerSettings.getTokenRevocationEndpoint();
 		OAuth2TokenRevocationEndpointFilter revocationEndpointFilter = new OAuth2TokenRevocationEndpointFilter(
 				authenticationManager, tokenRevocationEndpointUri);

oauth2-authorization-server/src/main/java/org/springframework/security/oauth2/server/authorization/config/annotation/web/configurers/OidcClientRegistrationEndpointConfigurer.java

@@ -46,8 +46,6 @@ import org.springframework.security.web.util.matcher.OrRequestMatcher;
 import org.springframework.security.web.util.matcher.RequestMatcher;
 import org.springframework.util.Assert;
 
-import static org.springframework.security.oauth2.server.authorization.config.annotation.web.configurers.OAuth2ConfigurerUtils.withMultipleIssuersPattern;
-
 /**
  * Configurer for OpenID Connect 1.0 Dynamic Client Registration Endpoint.
  *
@@ -194,7 +192,8 @@ public final class OidcClientRegistrationEndpointConfigurer extends AbstractOAut
 		AuthorizationServerSettings authorizationServerSettings = OAuth2ConfigurerUtils
 			.getAuthorizationServerSettings(httpSecurity);
 		String clientRegistrationEndpointUri = authorizationServerSettings.isMultipleIssuersAllowed()
-				? withMultipleIssuersPattern(authorizationServerSettings.getOidcClientRegistrationEndpoint())
+				? OAuth2ConfigurerUtils
+					.withMultipleIssuersPattern(authorizationServerSettings.getOidcClientRegistrationEndpoint())
 				: authorizationServerSettings.getOidcClientRegistrationEndpoint();
 		this.requestMatcher = new OrRequestMatcher(
 				new AntPathRequestMatcher(clientRegistrationEndpointUri, HttpMethod.POST.name()),
@@ -216,7 +215,8 @@ public final class OidcClientRegistrationEndpointConfigurer extends AbstractOAut
 			.getAuthorizationServerSettings(httpSecurity);
 
 		String clientRegistrationEndpointUri = authorizationServerSettings.isMultipleIssuersAllowed()
-				? withMultipleIssuersPattern(authorizationServerSettings.getOidcClientRegistrationEndpoint())
+				? OAuth2ConfigurerUtils
+					.withMultipleIssuersPattern(authorizationServerSettings.getOidcClientRegistrationEndpoint())
 				: authorizationServerSettings.getOidcClientRegistrationEndpoint();
 		OidcClientRegistrationEndpointFilter oidcClientRegistrationEndpointFilter = new OidcClientRegistrationEndpointFilter(
 				authenticationManager, clientRegistrationEndpointUri);

oauth2-authorization-server/src/main/java/org/springframework/security/oauth2/server/authorization/config/annotation/web/configurers/OidcLogoutEndpointConfigurer.java

@@ -44,8 +44,6 @@ import org.springframework.security.web.util.matcher.OrRequestMatcher;
 import org.springframework.security.web.util.matcher.RequestMatcher;
 import org.springframework.util.Assert;
 
-import static org.springframework.security.oauth2.server.authorization.config.annotation.web.configurers.OAuth2ConfigurerUtils.withMultipleIssuersPattern;
-
 /**
  * Configurer for OpenID Connect 1.0 RP-Initiated Logout Endpoint.
  *
@@ -169,7 +167,7 @@ public final class OidcLogoutEndpointConfigurer extends AbstractOAuth2Configurer
 		AuthorizationServerSettings authorizationServerSettings = OAuth2ConfigurerUtils
 			.getAuthorizationServerSettings(httpSecurity);
 		String logoutEndpointUri = authorizationServerSettings.isMultipleIssuersAllowed()
-				? withMultipleIssuersPattern(authorizationServerSettings.getOidcLogoutEndpoint())
+				? OAuth2ConfigurerUtils.withMultipleIssuersPattern(authorizationServerSettings.getOidcLogoutEndpoint())
 				: authorizationServerSettings.getOidcLogoutEndpoint();
 		this.requestMatcher = new OrRequestMatcher(new AntPathRequestMatcher(logoutEndpointUri, HttpMethod.GET.name()),
 				new AntPathRequestMatcher(logoutEndpointUri, HttpMethod.POST.name()));
@@ -190,7 +188,7 @@ public final class OidcLogoutEndpointConfigurer extends AbstractOAuth2Configurer
 			.getAuthorizationServerSettings(httpSecurity);
 
 		String logoutEndpointUri = authorizationServerSettings.isMultipleIssuersAllowed()
-				? withMultipleIssuersPattern(authorizationServerSettings.getOidcLogoutEndpoint())
+				? OAuth2ConfigurerUtils.withMultipleIssuersPattern(authorizationServerSettings.getOidcLogoutEndpoint())
 				: authorizationServerSettings.getOidcLogoutEndpoint();
 		OidcLogoutEndpointFilter oidcLogoutEndpointFilter = new OidcLogoutEndpointFilter(authenticationManager,
 				logoutEndpointUri);

oauth2-authorization-server/src/main/java/org/springframework/security/oauth2/server/authorization/config/annotation/web/configurers/OidcUserInfoEndpointConfigurer.java

@@ -49,8 +49,6 @@ import org.springframework.security.web.util.matcher.OrRequestMatcher;
 import org.springframework.security.web.util.matcher.RequestMatcher;
 import org.springframework.util.Assert;
 
-import static org.springframework.security.oauth2.server.authorization.config.annotation.web.configurers.OAuth2ConfigurerUtils.withMultipleIssuersPattern;
-
 /**
  * Configurer for OpenID Connect 1.0 UserInfo Endpoint.
  *
@@ -212,7 +210,8 @@ public final class OidcUserInfoEndpointConfigurer extends AbstractOAuth2Configur
 		AuthorizationServerSettings authorizationServerSettings = OAuth2ConfigurerUtils
 			.getAuthorizationServerSettings(httpSecurity);
 		String userInfoEndpointUri = authorizationServerSettings.isMultipleIssuersAllowed()
-				? withMultipleIssuersPattern(authorizationServerSettings.getOidcUserInfoEndpoint())
+				? OAuth2ConfigurerUtils
+					.withMultipleIssuersPattern(authorizationServerSettings.getOidcUserInfoEndpoint())
 				: authorizationServerSettings.getOidcUserInfoEndpoint();
 		this.requestMatcher = new OrRequestMatcher(
 				new AntPathRequestMatcher(userInfoEndpointUri, HttpMethod.GET.name()),
@@ -234,7 +233,8 @@ public final class OidcUserInfoEndpointConfigurer extends AbstractOAuth2Configur
 			.getAuthorizationServerSettings(httpSecurity);
 
 		String userInfoEndpointUri = authorizationServerSettings.isMultipleIssuersAllowed()
-				? withMultipleIssuersPattern(authorizationServerSettings.getOidcUserInfoEndpoint())
+				? OAuth2ConfigurerUtils
+					.withMultipleIssuersPattern(authorizationServerSettings.getOidcUserInfoEndpoint())
 				: authorizationServerSettings.getOidcUserInfoEndpoint();
 		OidcUserInfoEndpointFilter oidcUserInfoEndpointFilter = new OidcUserInfoEndpointFilter(authenticationManager,
 				userInfoEndpointUri);

oauth2-authorization-server/src/main/java/org/springframework/security/oauth2/server/authorization/web/authentication/OAuth2AccessTokenResponseAuthenticationSuccessHandler.java

@@ -23,7 +23,6 @@ import java.util.function.Consumer;
 import jakarta.servlet.ServletException;
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
-
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 

oauth2-authorization-server/src/main/java/org/springframework/security/oauth2/server/authorization/web/authentication/X509ClientCertificateAuthenticationConverter.java

@@ -66,7 +66,7 @@ public final class X509ClientCertificateAuthenticationConverter implements Authe
 		Map<String, Object> additionalParameters = OAuth2EndpointUtils
 			.getParametersIfMatchesAuthorizationCodeGrantRequest(request, OAuth2ParameterNames.CLIENT_ID);
 
-		ClientAuthenticationMethod clientAuthenticationMethod = clientCertificateChain.length == 1
+		ClientAuthenticationMethod clientAuthenticationMethod = (clientCertificateChain.length == 1)
 				? ClientAuthenticationMethod.SELF_SIGNED_TLS_CLIENT_AUTH : ClientAuthenticationMethod.TLS_CLIENT_AUTH;
 
 		return new OAuth2ClientAuthenticationToken(clientId, clientAuthenticationMethod, clientCertificateChain,