Don't let ForkDefinition, in confined package, have a compile dependency on classes outside that package

src/main/org/apache/tools/ant/taskdefs/optional/junitlauncher/confined/ForkDefinition.java

@@ -20,7 +20,6 @@ package org.apache.tools.ant.taskdefs.optional.junitlauncher.confined;
 
 import org.apache.tools.ant.BuildException;
 import org.apache.tools.ant.Project;
-import org.apache.tools.ant.taskdefs.optional.junitlauncher.StandaloneLauncher;
 import org.apache.tools.ant.types.Commandline;
 import org.apache.tools.ant.types.CommandlineJava;
 import org.apache.tools.ant.types.Environment;
@@ -33,6 +32,8 @@ import org.apache.tools.ant.types.PropertySet;
  */
 public class ForkDefinition {
 
+    private static final String STANDALONE_LAUNCHER_CLASS_NAME = "org.apache.tools.ant.taskdefs.optional.junitlauncher.StandaloneLauncher";
+
     private boolean includeAntRuntimeLibraries = true;
     private boolean includeJUnitPlatformLibraries = true;
 
@@ -114,7 +115,7 @@ public class ForkDefinition {
         } catch (CloneNotSupportedException e) {
             throw new BuildException(e);
         }
-        cmdLine.setClassname(StandaloneLauncher.class.getName());
+        cmdLine.setClassname(STANDALONE_LAUNCHER_CLASS_NAME);
         // VM arguments
         final Project project = task.getProject();
         final ClassLoader taskClassLoader = task.getClass().getClassLoader();

src/main/org/apache/tools/ant/taskdefs/optional/junitlauncher/confined/package-info.java

@@ -20,7 +20,7 @@
  * have any compile time dependency on any of JUnit platform or
  * engine classes/interfaces. They <em>must not</em> even have any
  * compile time dependency on any classes/interfaces that belong to the
- * {@link org.apache.tools.ant.taskdefs.optional.junitlauncher} package.
+ * {@code org.apache.tools.ant.taskdefs.optional.junitlauncher} package.
  *
  * @since Ant 1.10.6
  */