Merge pull request #31197 from 1993heqiang

* pr/31197:
  Upgrade copyright year of changed files
  Polish "Remove boxing"

Closes gh-31197

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/condition/OnExpressionCondition.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2022 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.
@@ -51,7 +51,7 @@ class OnExpressionCondition extends SpringBootCondition {
 		return ConditionOutcome.noMatch(messageBuilder.because("no BeanFactory available."));
 	}
 
-	private Boolean evaluateExpression(ConfigurableListableBeanFactory beanFactory, String expression) {
+	private boolean evaluateExpression(ConfigurableListableBeanFactory beanFactory, String expression) {
 		BeanExpressionResolver resolver = beanFactory.getBeanExpressionResolver();
 		if (resolver == null) {
 			resolver = new StandardBeanExpressionResolver();