GH-1354 - Upgrade to Spring Boot 4.0 M2.

Author: odrotbohm

.github/workflows/integration.yaml

@@ -18,11 +18,11 @@ jobs:
         - '3.2.12'
         - '3.3.12'
         - '3.3.13-SNAPSHOT'
-        - '3.4.7'
-        - '3.4.8-SNAPSHOT'
-        - '3.5.3-SNAPSHOT'
-        framework:
-        - '6.2.8'
+        - '3.4.9'
+        - '3.4.10-SNAPSHOT'
+        - '3.5.5'
+        - '3.5.6-SNAPSHOT'
+        - '4.0.0-SNAPSHOT'
         jmolecules:
         - '2025.0.0-RC4'
 

pom.xml

@@ -46,7 +46,7 @@
 		<nullaway.version>0.12.7</nullaway.version>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-		<spring-boot.version>4.0.0-M1</spring-boot.version>
+		<spring-boot.version>4.0.0-M2</spring-boot.version>
 		<spring-framework.version>7.0.0-M8</spring-framework.version> <!-- For Javadoc links only -->
 		<testcontainers.version>1.21.3</testcontainers.version>
 		<structurizr.version>4.1.0</structurizr.version>

spring-modulith-examples/pom.xml

@@ -4,7 +4,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>4.0.0-M1</version>
+		<version>4.0.0-M2</version>
 		<relativePath />
 	</parent>
 

spring-modulith-test/src/main/java/org/springframework/modulith/test/ModuleTypeExcludeFilter.java

@@ -19,6 +19,7 @@
 import java.util.Objects;
 import java.util.function.Supplier;
 
+import org.jspecify.annotations.Nullable;
 import org.springframework.boot.context.TypeExcludeFilter;
 import org.springframework.core.type.classreading.MetadataReader;
 import org.springframework.core.type.classreading.MetadataReaderFactory;
@@ -55,7 +56,7 @@ public boolean match(MetadataReader metadataReader, MetadataReaderFactory metada
 	 * @see java.lang.Object#equals(java.lang.Object)
 	 */
 	@Override
-	public boolean equals(Object obj) {
+	public boolean equals(@Nullable Object obj) {
 
 		if (this == obj) {
 			return true;