JAVA-13736: Fix maven-generate-war parent (#12575)

maven-modules/maven-generate-war/pom.xml

@@ -11,11 +11,10 @@
     <description>Spring boot project to demonstrate war file generation</description>
 
     <parent>
-        <groupId>org.springframework.boot</groupId>
+        <groupId>com.baeldung</groupId>
-        <artifactId>spring-boot-starter-parent</artifactId>
+        <artifactId>parent-boot-2</artifactId>
-        <version>2.5.4</version>
+        <version>0.0.1-SNAPSHOT</version>
-        <relativePath />
+        <relativePath>../../parent-boot-2</relativePath>
-        <!-- lookup parent from repository -->
     </parent>
 
     <dependencies>
@@ -58,12 +57,24 @@
                     </archive>
                 </configuration>
             </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>${maven-compiler-plugin.version}</version>
+                <configuration>
+                    <source>${maven.compiler.source.version}</source>
+                    <target>${maven.compiler.target.version}</target>
+                </configuration>
+            </plugin>
         </plugins>
     </build>
 
     <properties>
         <java.version>11</java.version>
         <log4j2.version>2.17.1</log4j2.version>
+        <maven-compiler-plugin.version>3.10.1</maven-compiler-plugin.version>
+        <maven.compiler.source.version>11</maven.compiler.source.version>
+        <maven.compiler.target.version>11</maven.compiler.target.version>
     </properties>
 
 </project>

maven-modules/maven-generate-war/src/test/java/com/baeldung/SpringContextTest.java

@@ -4,7 +4,7 @@ import org.junit.jupiter.api.Test;
 import org.springframework.boot.test.context.SpringBootTest;
 
 @SpringBootTest
-class MavenGenerateWarApplicationTests {
+class SpringContextTest {
 
     @Test
     void contextLoads() {