Use method references when possible

See gh-40974

buildSrc/src/main/java/org/springframework/boot/build/bom/UpgradePolicy.java

@@ -35,12 +35,12 @@ public enum UpgradePolicy implements BiPredicate<DependencyVersion, DependencyVe
 	/**
 	 * Minor versions of the current major version.
 	 */
-	SAME_MAJOR_VERSION((candidate, current) -> candidate.isSameMajor(current)),
+	SAME_MAJOR_VERSION(DependencyVersion::isSameMajor),
 
 	/**
 	 * Patch versions of the current minor version.
 	 */
-	SAME_MINOR_VERSION((candidate, current) -> candidate.isSameMinor(current));
+	SAME_MINOR_VERSION(DependencyVersion::isSameMinor);
 
 	private final BiPredicate<DependencyVersion, DependencyVersion> delegate;
 

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/quartz/QuartzEndpoint.java

@@ -46,6 +46,7 @@ import org.quartz.Trigger;
 import org.quartz.Trigger.TriggerState;
 import org.quartz.TriggerKey;
 import org.quartz.impl.matchers.GroupMatcher;
+import org.quartz.utils.Key;
 
 import org.springframework.boot.actuate.endpoint.OperationResponseBody;
 import org.springframework.boot.actuate.endpoint.SanitizableData;
@@ -100,7 +101,7 @@ public class QuartzEndpoint {
 		for (String groupName : this.scheduler.getJobGroupNames()) {
 			List<String> jobs = this.scheduler.getJobKeys(GroupMatcher.jobGroupEquals(groupName))
 				.stream()
-				.map((key) -> key.getName())
+				.map(Key::getName)
 				.toList();
 			result.put(groupName, Collections.singletonMap("jobs", jobs));
 		}
@@ -121,7 +122,7 @@ public class QuartzEndpoint {
 			groupDetails.put("triggers",
 					this.scheduler.getTriggerKeys(GroupMatcher.triggerGroupEquals(groupName))
 						.stream()
-						.map((key) -> key.getName())
+						.map(Key::getName)
 						.toList());
 			result.put(groupName, groupDetails);
 		}

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/orm/jpa/HibernateProperties.java

@@ -148,9 +148,9 @@ public class HibernateProperties {
 
 		private void applyNamingStrategies(Map<String, Object> properties) {
 			applyNamingStrategy(properties, AvailableSettings.IMPLICIT_NAMING_STRATEGY, this.implicitStrategy,
-					() -> SpringImplicitNamingStrategy.class.getName());
+					SpringImplicitNamingStrategy.class::getName);
 			applyNamingStrategy(properties, AvailableSettings.PHYSICAL_NAMING_STRATEGY, this.physicalStrategy,
-					() -> CamelCaseToUnderscoresNamingStrategy.class.getName());
+					CamelCaseToUnderscoresNamingStrategy.class::getName);
 		}
 
 		private void applyNamingStrategy(Map<String, Object> properties, String key, Object strategy,

spring-boot-project/spring-boot-devtools/src/main/java/org/springframework/boot/devtools/autoconfigure/RemoteDevtoolsSecurityConfiguration.java

@@ -23,6 +23,7 @@ import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.core.annotation.Order;
 import org.springframework.security.config.annotation.web.builders.HttpSecurity;
+import org.springframework.security.config.annotation.web.configurers.CsrfConfigurer;
 import org.springframework.security.web.SecurityFilterChain;
 import org.springframework.security.web.util.matcher.AntPathRequestMatcher;
 
@@ -49,7 +50,7 @@ class RemoteDevtoolsSecurityConfiguration {
 	SecurityFilterChain devtoolsSecurityFilterChain(HttpSecurity http) throws Exception {
 		http.securityMatcher(new AntPathRequestMatcher(this.url));
 		http.authorizeHttpRequests((requests) -> requests.anyRequest().anonymous());
-		http.csrf((csrf) -> csrf.disable());
+		http.csrf(CsrfConfigurer::disable);
 		return http.build();
 	}
 

spring-boot-project/spring-boot-docs/src/main/java/org/springframework/boot/docs/data/sql/h2webconsole/springsecurity/DevProfileSecurityConfiguration.java

@@ -24,6 +24,8 @@ import org.springframework.core.Ordered;
 import org.springframework.core.annotation.Order;
 import org.springframework.security.config.Customizer;
 import org.springframework.security.config.annotation.web.builders.HttpSecurity;
+import org.springframework.security.config.annotation.web.configurers.CsrfConfigurer;
+import org.springframework.security.config.annotation.web.configurers.HeadersConfigurer.FrameOptionsConfig;
 import org.springframework.security.web.SecurityFilterChain;
 
 @Profile("dev")
@@ -35,8 +37,8 @@ public class DevProfileSecurityConfiguration {
 	SecurityFilterChain h2ConsoleSecurityFilterChain(HttpSecurity http) throws Exception {
 		http.securityMatcher(PathRequest.toH2Console());
 		http.authorizeHttpRequests(yourCustomAuthorization());
-		http.csrf((csrf) -> csrf.disable());
+		http.csrf(CsrfConfigurer::disable);
-		http.headers((headers) -> headers.frameOptions((frame) -> frame.sameOrigin()));
+		http.headers((headers) -> headers.frameOptions(FrameOptionsConfig::sameOrigin));
 		return http.build();
 	}
 

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/main/java/org/springframework/boot/gradle/dsl/SpringBootExtension.java

@@ -93,7 +93,7 @@ public class SpringBootExtension {
 			tasks.named(JavaPlugin.CLASSES_TASK_NAME).configure((task) -> task.dependsOn(bootBuildInfo));
 			bootBuildInfo.configure((buildInfo) -> buildInfo.getProperties()
 				.getArtifact()
-				.convention(this.project.provider(() -> determineArtifactBaseName())));
+				.convention(this.project.provider(this::determineArtifactBaseName)));
 		});
 		if (configurer != null) {
 			bootBuildInfo.configure(configurer);

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/main/java/org/springframework/boot/gradle/plugin/SpringBootAotPlugin.java

@@ -152,7 +152,7 @@ public class SpringBootAotPlugin implements Plugin<Project> {
 		task.getClassesOutput()
 			.set(project.getLayout().getBuildDirectory().dir("generated/" + sourceSet.getName() + "Classes"));
 		task.getGroupId().set(project.provider(() -> String.valueOf(project.getGroup())));
-		task.getArtifactId().set(project.provider(() -> project.getName()));
+		task.getArtifactId().set(project.provider(project::getName));
 		configureToolchainConvention(project, task);
 	}