diff --git a/cas/src/main/java/org/springframework/security/cas/authentication/CasAuthenticationToken.java b/cas/src/main/java/org/springframework/security/cas/authentication/CasAuthenticationToken.java
index 7efdf8e939..0bb9c4d28b 100644
--- a/cas/src/main/java/org/springframework/security/cas/authentication/CasAuthenticationToken.java
+++ b/cas/src/main/java/org/springframework/security/cas/authentication/CasAuthenticationToken.java
@@ -115,15 +115,8 @@ public class CasAuthenticationToken extends AbstractAuthenticationToken implemen
 		if (!super.equals(obj)) {
 			return false;
 		}
-		if (obj instanceof CasAuthenticationToken) {
-			CasAuthenticationToken test = (CasAuthenticationToken) obj;
-			if (!this.assertion.equals(test.getAssertion())) {
-				return false;
-			}
-			if (this.getKeyHash() != test.getKeyHash()) {
-				return false;
-			}
-			return true;
+		if (obj instanceof CasAuthenticationToken test) {
+			return this.assertion.equals(test.getAssertion()) && this.getKeyHash() == test.getKeyHash();
 		}
 		return false;
 	}
diff --git a/oauth2/oauth2-core/src/main/java/org/springframework/security/oauth2/core/converter/ObjectToListStringConverter.java b/oauth2/oauth2-core/src/main/java/org/springframework/security/oauth2/core/converter/ObjectToListStringConverter.java
index c1a70f9651..f6e9b3c291 100644
--- a/oauth2/oauth2-core/src/main/java/org/springframework/security/oauth2/core/converter/ObjectToListStringConverter.java
+++ b/oauth2/oauth2-core/src/main/java/org/springframework/security/oauth2/core/converter/ObjectToListStringConverter.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 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.
@@ -43,12 +43,9 @@ final class ObjectToListStringConverter implements ConditionalGenericConverter {
 
 	@Override
 	public boolean matches(TypeDescriptor sourceType, TypeDescriptor targetType) {
-		if (targetType.getElementTypeDescriptor() == null
-				|| targetType.getElementTypeDescriptor().getType().equals(String.class) || sourceType == null
-				|| ClassUtils.isAssignable(sourceType.getType(), targetType.getElementTypeDescriptor().getType())) {
-			return true;
-		}
-		return false;
+		TypeDescriptor typeDescriptor = targetType.getElementTypeDescriptor();
+		return typeDescriptor == null || typeDescriptor.getType().equals(String.class) || sourceType == null
+				|| ClassUtils.isAssignable(sourceType.getType(), typeDescriptor.getType());
 	}
 
 	@Override
diff --git a/oauth2/oauth2-core/src/main/java/org/springframework/security/oauth2/core/converter/ObjectToMapStringObjectConverter.java b/oauth2/oauth2-core/src/main/java/org/springframework/security/oauth2/core/converter/ObjectToMapStringObjectConverter.java
index 2a6e241812..863c36f4db 100644
--- a/oauth2/oauth2-core/src/main/java/org/springframework/security/oauth2/core/converter/ObjectToMapStringObjectConverter.java
+++ b/oauth2/oauth2-core/src/main/java/org/springframework/security/oauth2/core/converter/ObjectToMapStringObjectConverter.java
@@ -37,11 +37,8 @@ final class ObjectToMapStringObjectConverter implements ConditionalGenericConver
 
 	@Override
 	public boolean matches(TypeDescriptor sourceType, TypeDescriptor targetType) {
-		if (targetType.getElementTypeDescriptor() == null
-				|| targetType.getMapKeyTypeDescriptor().getType().equals(String.class)) {
-			return true;
-		}
-		return false;
+		return targetType.getElementTypeDescriptor() == null
+				|| targetType.getMapKeyTypeDescriptor().getType().equals(String.class);
 	}
 
 	@Override
diff --git a/web/src/main/java/org/springframework/security/web/access/intercept/AuthorizationFilter.java b/web/src/main/java/org/springframework/security/web/access/intercept/AuthorizationFilter.java
index 80659363f2..d6fb9286c4 100644
--- a/web/src/main/java/org/springframework/security/web/access/intercept/AuthorizationFilter.java
+++ b/web/src/main/java/org/springframework/security/web/access/intercept/AuthorizationFilter.java
@@ -109,10 +109,8 @@ public class AuthorizationFilter extends GenericFilterBean {
 		if (DispatcherType.ERROR.equals(request.getDispatcherType()) && !this.filterErrorDispatch) {
 			return true;
 		}
-		if (DispatcherType.ASYNC.equals(request.getDispatcherType()) && !this.filterAsyncDispatch) {
-			return true;
-		}
-		return false;
+
+		return DispatcherType.ASYNC.equals(request.getDispatcherType()) && !this.filterAsyncDispatch;
 	}
 
 	private boolean isApplied(HttpServletRequest request) {
diff --git a/web/src/main/java/org/springframework/security/web/firewall/DefaultHttpFirewall.java b/web/src/main/java/org/springframework/security/web/firewall/DefaultHttpFirewall.java
index 1bed1d74c2..224d9fa18c 100644
--- a/web/src/main/java/org/springframework/security/web/firewall/DefaultHttpFirewall.java
+++ b/web/src/main/java/org/springframework/security/web/firewall/DefaultHttpFirewall.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.
@@ -87,10 +87,7 @@ public class DefaultHttpFirewall implements HttpFirewall {
 		if (this.allowUrlEncodedSlash || uri == null) {
 			return false;
 		}
-		if (uri.contains("%2f") || uri.contains("%2F")) {
-			return true;
-		}
-		return false;
+		return uri.contains("%2f") || uri.contains("%2F");
 	}
 
 	/**
diff --git a/web/src/main/java/org/springframework/security/web/firewall/StrictHttpFirewall.java b/web/src/main/java/org/springframework/security/web/firewall/StrictHttpFirewall.java
index 601de7b0f8..6bc13540ad 100644
--- a/web/src/main/java/org/springframework/security/web/firewall/StrictHttpFirewall.java
+++ b/web/src/main/java/org/springframework/security/web/firewall/StrictHttpFirewall.java
@@ -611,10 +611,7 @@ public class StrictHttpFirewall implements HttpFirewall {
 		if (valueContains(request.getServletPath(), value)) {
 			return true;
 		}
-		if (valueContains(request.getPathInfo(), value)) {
-			return true;
-		}
-		return false;
+		return valueContains(request.getPathInfo(), value);
 	}
 
 	private static boolean containsOnlyPrintableAsciiCharacters(String uri) {
diff --git a/web/src/main/java/org/springframework/security/web/savedrequest/DefaultSavedRequest.java b/web/src/main/java/org/springframework/security/web/savedrequest/DefaultSavedRequest.java
index 47d7b8cad1..e221477e72 100644
--- a/web/src/main/java/org/springframework/security/web/savedrequest/DefaultSavedRequest.java
+++ b/web/src/main/java/org/springframework/security/web/savedrequest/DefaultSavedRequest.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 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.
@@ -354,10 +354,7 @@ public class DefaultSavedRequest implements SavedRequest {
 		if (arg1 == null || arg2 == null) {
 			return false;
 		}
-		if (arg1.equals(arg2)) {
-			return true;
-		}
-		return false;
+		return arg1.equals(arg2);
 	}
 
 	@Override