JAVA-26001_A_C: Fix formatting of POMs for modules A to C (#14961)

core-java-modules/core-java-21/pom.xml

@@ -12,12 +12,6 @@
         <version>0.0.1-SNAPSHOT</version>
     </parent>
 
-    <properties>
-        <maven.compiler.source.version>21</maven.compiler.source.version>
-        <maven.compiler.target.version>21</maven.compiler.target.version>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    </properties>
-
     <build>
         <plugins>
             <plugin>
@@ -44,4 +38,10 @@
         </plugins>
     </build>
 
+    <properties>
+        <maven.compiler.source.version>21</maven.compiler.source.version>
+        <maven.compiler.target.version>21</maven.compiler.target.version>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
 </project>

core-java-modules/core-java-collections-array-list-2/pom.xml

@@ -1,11 +1,11 @@
-<project
+<project xmlns="http://maven.apache.org/POM/4.0.0"
-    xmlns="http://maven.apache.org/POM/4.0.0"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <artifactId>core-java-collections-array-list-2</artifactId>
     <name>core-java-collections-array-list-2</name>
     <packaging>jar</packaging>
+
     <parent>
         <groupId>com.baeldung.core-java-modules</groupId>
         <artifactId>core-java-modules</artifactId>

core-java-modules/core-java-collections-list-6/pom.xml

@@ -12,4 +12,5 @@
         <artifactId>core-java-modules</artifactId>
         <version>0.0.1-SNAPSHOT</version>
     </parent>
+
 </project>