Merge pull request #17832 from succezlijunyi

* pr/17832:
  Simplify some code

Closes gh-17832

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/context/properties/ConfigurationPropertiesReportEndpoint.java

@@ -131,8 +131,7 @@ public class ConfigurationPropertiesReportEndpoint implements ApplicationContext
 
 	private Map<String, Object> getConfigurationPropertiesBeans(ApplicationContext context,
 			ConfigurationBeanFactoryMetadata beanFactoryMetadata) {
-		Map<String, Object> beans = new HashMap<>();
-		beans.putAll(context.getBeansWithAnnotation(ConfigurationProperties.class));
+		Map<String, Object> beans = new HashMap<>(context.getBeansWithAnnotation(ConfigurationProperties.class));
 		if (beanFactoryMetadata != null) {
 			beans.putAll(beanFactoryMetadata.getBeansWithFactoryAnnotation(ConfigurationProperties.class));
 		}

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/web/reactive/AbstractWebFluxEndpointHandlerMapping.java

@@ -332,8 +332,7 @@ public abstract class AbstractWebFluxEndpointHandlerMapping extends RequestMappi
 		}
 
 		private Map<String, Object> getArguments(ServerWebExchange exchange, Map<String, String> body) {
-			Map<String, Object> arguments = new LinkedHashMap<>();
-			arguments.putAll(getTemplateVariables(exchange));
+			Map<String, Object> arguments = new LinkedHashMap<>(getTemplateVariables(exchange));
 			if (body != null) {
 				arguments.putAll(body);
 			}

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/web/servlet/AbstractWebMvcEndpointHandlerMapping.java

@@ -310,8 +310,7 @@ public abstract class AbstractWebMvcEndpointHandlerMapping extends RequestMappin
 		}
 
 		private Map<String, Object> getArguments(HttpServletRequest request, Map<String, String> body) {
-			Map<String, Object> arguments = new LinkedHashMap<>();
-			arguments.putAll(getTemplateVariables(request));
+			Map<String, Object> arguments = new LinkedHashMap<>(getTemplateVariables(request));
 			String matchAllRemainingPathSegmentsVariable = this.operation.getRequestPredicate()
 					.getMatchAllRemainingPathSegmentsVariable();
 			if (matchAllRemainingPathSegmentsVariable != null) {

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/info/Info.java

@@ -40,8 +40,7 @@ public final class Info {
 	private final Map<String, Object> details;
 
 	private Info(Builder builder) {
-		Map<String, Object> content = new LinkedHashMap<>();
-		content.putAll(builder.content);
+		Map<String, Object> content = new LinkedHashMap<>(builder.content);
 		this.details = Collections.unmodifiableMap(content);
 	}
 

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/StartupInfoLogger.java

@@ -126,7 +126,7 @@ class StartupInfoLogger {
 	}
 
 	private void appendPid(StringBuilder message) {
-		append(message, "with PID ", () -> new ApplicationPid());
+		append(message, "with PID ", ApplicationPid::new);
 	}
 
 	private void appendContext(StringBuilder message) {