spring-boot/config/checkstyle/checkstyle.xml

<?xml version="1.0"?>
<!DOCTYPE module PUBLIC
		"-//Checkstyle//DTD Checkstyle Configuration 1.3//EN"
		"https://checkstyle.org/dtds/configuration_1_3.dtd">
<module name="com.puppycrawl.tools.checkstyle.Checker">
	<module name="SuppressionFilter">
		<property name="file" value="${config_loc}/checkstyle-suppressions.xml"/>
	</module>
	<module name="io.spring.javaformat.checkstyle.SpringChecks">
		<property name="avoidStaticImportExcludes"
			value="org.springframework.boot.autoconfigure.AutoConfigurationImportedCondition.importedAutoConfiguration" />
	</module>
	<module name="io.spring.javaformat.checkstyle.check.SpringHeaderCheck">
		<property name="headerFile" value="${config_loc}/checkstyle-header.txt"/>
	</module>
	<module name="com.puppycrawl.tools.checkstyle.TreeWalker">
		<module name="io.spring.javaformat.checkstyle.check.SpringDeprecatedCheck" />
		<module name="io.spring.javaformat.checkstyle.check.SpringJUnit5Check" />
		<module name="ExplicitInitialization" />
		<module
			name="com.puppycrawl.tools.checkstyle.checks.imports.IllegalImportCheck">
			<property name="regexp" value="true" />
			<property name="illegalPkgs"
				value="^sun.*, ^org\.apache\.commons\.(?!compress|dbcp2|logging|pool2).*, ^com\.datastax\.oss\.driver\.shaded.*, ^com\.google\.common.*, ^io\.micrometer\.core\.lang.*, ^io\.micrometer\.shaded.*, ^org\.jetbrains\.annotations.*, ^org\.testcontainers\.shaded.*,
				^org\.apache\.commons\.compress\.utils" />
			<property name="illegalClasses"
				value="^com\.hazelcast\.util\.Base64, ^org\.junit\.rules\.ExpectedException, ^org\.mockito\.InjectMocks, ^org\.slf4j\.LoggerFactory, ^org.springframework.context.annotation.ScannedGenericBeanDefinition, ^(?!org\.springframework\.core\.).*ResolvableType, ^(?!org\.springframework\.util\.).*ReflectionUtils, ^reactor\.core\.support\.Assert"/>
		</module>
		<module
			name="com.puppycrawl.tools.checkstyle.checks.imports.IllegalImportCheck">
			<property name="id" value="mainCodeIllegalImportCheck"/>
			<property name="regexp" value="true" />
			<property name="illegalClasses"
				value="javax.annotation.PostConstruct, jakarta.annotation.PostConstruct"/>
			<property name="illegalPkgs"
				value="^io\.opentelemetry\.semconv.*, ^org\.gradle\.(?!api).*\.tasks.*"/>
		</module>
		<module
			name="com.puppycrawl.tools.checkstyle.checks.imports.ImportControlCheck">
			<property name="file"
				value="${config_loc}/import-control.xml" />
			<property name="path" value="^.*[\\/]src[\\/]main[\\/].*$" />
		</module>
		<module name="com.puppycrawl.tools.checkstyle.checks.regexp.RegexpSinglelineJavaCheck">
			<property name="maximum" value="0"/>
			<property name="format" value="org\.junit\.Assert|org\.junit\.jupiter\.api\.Assertions" />
			<property name="message"
				value="Please use AssertJ imports." />
			<property name="ignoreComments" value="true" />
		</module>
		<module
			name="com.puppycrawl.tools.checkstyle.checks.regexp.RegexpSinglelineJavaCheck">
			<property name="maximum" value="0" />
			<property name="format"
				value="assertThatExceptionOfType\((NullPointerException|IllegalArgumentException|IOException|IllegalStateException)\.class\)" />
			<property name="message"
				value="Please use specialized AssertJ assertThat*Exception method." />
			<property name="ignoreComments" value="true" />
		</module>
		<module
			name="com.puppycrawl.tools.checkstyle.checks.regexp.RegexpSinglelineJavaCheck">
			<property name="maximum" value="0" />
			<property name="format"
					  value="assertThatThrownBy\(" />
			<property name="message"
					  value="Please use AssertJ assertThatExceptionOfType method." />
			<property name="ignoreComments" value="true" />
		</module>
 		<module name="com.puppycrawl.tools.checkstyle.checks.regexp.RegexpSinglelineJavaCheck">
 			<property name="maximum" value="0"/>
			<property name="format" value="org\.mockito\.(Mockito|BDDMockito)\.(when|doThrow|doAnswer|doReturn|verify|verifyNoInteractions|verifyNoMoreInteractions)" />
			<property name="message"
				value="Please use BDD-style (given, when, then) using BDDMockito imports." />
			<property name="ignoreComments" value="true" />
		</module>
		<module name="com.puppycrawl.tools.checkstyle.checks.regexp.RegexpSinglelineJavaCheck">
			<property name="maximum" value="0"/>
			<property name="format" value="(List|Map|Set)\.of\(\)" />
			<property name="message"
					  value="Please use Collections.emptyList()/emptyMap()/emptySet() for creating empty lists/maps/sets." />
			<property name="ignoreComments" value="true" />
		</module>
		<module name="io.spring.javaformat.checkstyle.check.SpringJavadocCheck">
			<property name="publicOnlySinceTags" value="true" />
			<property name="requireSinceTag" value="true" />
		</module>
	</module>
</module>