Merge pull request #36971 from omaryaya

* pr/36971:
  Polish "Avoid setting null compiler option"
  Avoid setting null compiler option

Closes gh-36971

spring-boot-project/spring-boot-tools/spring-boot-maven-plugin/src/main/java/org/springframework/boot/maven/AbstractAotMojo.java

@@ -53,6 +53,7 @@ import org.springframework.boot.maven.CommandLineBuilder.ClasspathBuilder;
  *
  * @author Phillip Webb
  * @author Scott Frederick
+ * @author Omar YAYA
  * @since 3.0.0
  */
 public abstract class AbstractAotMojo extends AbstractDependencyFilterMojo {
@@ -152,10 +153,16 @@ public abstract class AbstractAotMojo extends AbstractDependencyFilterMojo {
 				options.add(releaseVersion);
 			}
 			else {
-				options.add("--source");
-				options.add(compilerConfiguration.getSourceMajorVersion());
-				options.add("--target");
-				options.add(compilerConfiguration.getTargetMajorVersion());
+				String source = compilerConfiguration.getSourceMajorVersion();
+				if (source != null) {
+					options.add("--source");
+					options.add(source);
+				}
+				String target = compilerConfiguration.getTargetMajorVersion();
+				if (target != null) {
+					options.add("--target");
+					options.add(target);
+				}
 			}
 			options.addAll(new RunArguments(this.compilerArguments).getArgs());
 			Iterable<? extends JavaFileObject> compilationUnits = fileManager.getJavaFileObjectsFromPaths(sourceFiles);