Polish ParentContextCloserApplicationListener

Fix formatting for the recent ParentContextCloserApplicationListener
change, also some minor internal renames.

spring-boot/src/main/java/org/springframework/boot/builder/ParentContextCloserApplicationListener.java

@@ -25,13 +25,15 @@ import org.springframework.context.event.ContextClosedEvent;
 import org.springframework.core.Ordered;
 
 /**
- * Listener that closes the application context if its parent is closed. It listens for refresh events and grabs the
- * current context from there, and then listens for closed events and propagates it down the hierarchy.
+ * Listener that closes the application context if its parent is closed. It listens for
+ * refresh events and grabs the current context from there, and then listens for closed
+ * events and propagates it down the hierarchy.
  * 
  * @author Dave Syer
+ * @author Eric Bottard
  */
-public class ParentContextCloserApplicationListener implements ApplicationListener<ParentContextAvailableEvent>,
-		Ordered {
+public class ParentContextCloserApplicationListener implements
+		ApplicationListener<ParentContextAvailableEvent>, Ordered {
 
 	@Override
 	public int getOrder() {
@@ -39,38 +41,43 @@ public class ParentContextCloserApplicationListener implements ApplicationListen
 	}
 
 	@Override
-	public final void onApplicationEvent(ParentContextAvailableEvent event) {
+	public void onApplicationEvent(ParentContextAvailableEvent event) {
 		maybeInstallListenerInParent(event.getApplicationContext());
 	}
 
 	private void maybeInstallListenerInParent(ConfigurableApplicationContext child) {
 		if (child.getParent() instanceof ConfigurableApplicationContext) {
-			ConfigurableApplicationContext parent = (ConfigurableApplicationContext) child.getParent();
+			ConfigurableApplicationContext parent = (ConfigurableApplicationContext) child
+					.getParent();
 			parent.addApplicationListener(createContextCloserListener(child));
 		}
 	}
 
 	/**
-	 * Subclasses may override to create their own subclass of ContextCloserListener. This still enforces the use of a
-	 * weak reference.
+	 * Subclasses may override to create their own subclass of ContextCloserListener. This
+	 * still enforces the use of a weak reference.
 	 */
-	protected ContextCloserListener createContextCloserListener(ConfigurableApplicationContext child) {
+	protected ContextCloserListener createContextCloserListener(
+			ConfigurableApplicationContext child) {
 		return new ContextCloserListener(child);
 	}
 
-	protected static class ContextCloserListener implements ApplicationListener<ContextClosedEvent> {
+	protected static class ContextCloserListener implements
+			ApplicationListener<ContextClosedEvent> {
 
-		private WeakReference<ConfigurableApplicationContext> contextRef;
-
-		public ContextCloserListener(ConfigurableApplicationContext context) {
-			this.contextRef = new WeakReference<ConfigurableApplicationContext>(context);
+		private WeakReference<ConfigurableApplicationContext> childContext;
 
+		public ContextCloserListener(ConfigurableApplicationContext childContext) {
+			this.childContext = new WeakReference<ConfigurableApplicationContext>(
+					childContext);
 		}
 
 		@Override
 		public void onApplicationEvent(ContextClosedEvent event) {
-			ConfigurableApplicationContext context = contextRef.get();
-			if (context != null && event.getApplicationContext() == context.getParent() && context.isActive()) {
+			ConfigurableApplicationContext context = this.childContext.get();
+			if ((context != null)
+					&& (event.getApplicationContext() == context.getParent())
+					&& context.isActive()) {
 				context.close();
 			}
 		}