Polish diamond operator usage

web/src/main/java/org/springframework/security/web/authentication/LoginUrlAuthenticationEntryPoint.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2004, 2005, 2006 Acegi Technology Pty Limited
+ * Copyright 2004-2024 Acegi Technology Pty Limited
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -138,7 +138,6 @@ public class LoginUrlAuthenticationEntryPoint implements AuthenticationEntryPoin
 		logger.debug(LogMessage.format("Server side forward to: %s", loginForm));
 		RequestDispatcher dispatcher = request.getRequestDispatcher(loginForm);
 		dispatcher.forward(request, response);
-		return;
 	}
 
 	protected String buildRedirectUrlToLoginPage(HttpServletRequest request, HttpServletResponse response,

web/src/main/java/org/springframework/security/web/authentication/preauth/websphere/DefaultWASUsernameAndGroupsExtractor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2016 the original author or authors.
+ * Copyright 2002-2024 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -129,7 +129,7 @@ final class DefaultWASUsernameAndGroupsExtractor implements WASUsernameAndGroups
 			final Collection<String> groups = (Collection<String>) invokeMethod(getGroupsForUserMethod(), userReg,
 					new Object[] { securityName });
 			logger.debug(LogMessage.format("Groups for user %s: %s", securityName, groups));
-			return new ArrayList<String>(groups);
+			return new ArrayList<>(groups);
 		}
 		catch (Exception ex) {
 			logger.error("Exception occured while looking up groups for user", ex);

web/src/main/java/org/springframework/security/web/firewall/StrictHttpFirewall.java

@@ -737,7 +737,7 @@ public class StrictHttpFirewall implements HttpFirewall {
 				validateAllowedHeaderName(name);
 			}
 			Enumeration<String> headers = super.getHeaders(name);
-			return new Enumeration<String>() {
+			return new Enumeration<>() {
 
 				@Override
 				public boolean hasMoreElements() {
@@ -757,7 +757,7 @@ public class StrictHttpFirewall implements HttpFirewall {
 		@Override
 		public Enumeration<String> getHeaderNames() {
 			Enumeration<String> names = super.getHeaderNames();
-			return new Enumeration<String>() {
+			return new Enumeration<>() {
 
 				@Override
 				public boolean hasMoreElements() {
@@ -803,7 +803,7 @@ public class StrictHttpFirewall implements HttpFirewall {
 		@Override
 		public Enumeration<String> getParameterNames() {
 			Enumeration<String> paramaterNames = super.getParameterNames();
-			return new Enumeration<String>() {
+			return new Enumeration<>() {
 
 				@Override
 				public boolean hasMoreElements() {

web/src/main/java/org/springframework/security/web/jackson2/PreAuthenticatedAuthenticationTokenDeserializer.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2015-2018 the original author or authors.
+ * Copyright 2015-2024 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -46,7 +46,7 @@ import org.springframework.security.web.authentication.preauth.PreAuthenticatedA
  */
 class PreAuthenticatedAuthenticationTokenDeserializer extends JsonDeserializer<PreAuthenticatedAuthenticationToken> {
 
-	private static final TypeReference<List<GrantedAuthority>> GRANTED_AUTHORITY_LIST = new TypeReference<List<GrantedAuthority>>() {
+	private static final TypeReference<List<GrantedAuthority>> GRANTED_AUTHORITY_LIST = new TypeReference<>() {
 	};
 
 	/**