Reorganize methods in ReloadableResourceBundleMessageSource

See gh-30369

spring-context/src/main/java/org/springframework/context/support/ReloadableResourceBundleMessageSource.java

@@ -398,45 +398,6 @@ public class ReloadableResourceBundleMessageSource extends AbstractResourceBased
 		}
 	}
 
-	/**
-	 * Resolve the specified bundle {@code filename} into a concrete {@link Resource},
-	 * potentially checking multiple sources or file extensions.
-	 * <p>If no suitable concrete {@code Resource} can be resolved, this method
-	 * returns a {@code Resource} for which {@link Resource#exists()} returns
-	 * {@code false}, which gets subsequently ignored.
-	 * <p>This can be leveraged to check the last modification timestamp or to load
-	 * properties from alternative sources &mdash; for example, from an XML BLOB
-	 * in a database, or from properties serialized using a custom format such as
-	 * JSON.
-	 * <p>The default implementation delegates to the configured
-	 * {@link #setResourceLoader(ResourceLoader) ResourceLoader} to resolve
-	 * resources, first checking for an existing {@code Resource} with a
-	 * {@code .properties} extension, and otherwise returning a {@code Resource}
-	 * with a {@code .xml} extension.
-	 * <p>When overriding this method, {@link #loadProperties(Resource, String)}
-	 * <strong>must</strong> be capable of loading properties from any type of
-	 * {@code Resource} returned by this method. As a consequence, implementors
-	 * are strongly encouraged to also override {@code loadProperties()}.
-	 * <p>As an alternative to overriding this method, you can configure a
-	 * {@link #setPropertiesPersister(PropertiesPersister) PropertiesPersister}
-	 * that is capable of dealing with all resources returned by this method.
-	 * Please note, however, that the default {@code loadProperties()} implementation
-	 * uses {@link PropertiesPersister#loadFromXml(Properties, InputStream) loadFromXml}
-	 * for XML resources and otherwise uses the two
-	 * {@link PropertiesPersister#load(Properties, InputStream) load} methods
-	 * for other types of resources.
-	 * @param filename the bundle filename (basename + Locale)
-	 * @return the {@code Resource} to use
-	 * @since 6.1
-	 */
-	protected Resource determineResource(String filename) {
-		Resource propertiesResource = this.resourceLoader.getResource(filename + PROPERTIES_SUFFIX);
-		if (propertiesResource.exists()) {
-			return propertiesResource;
-		}
-		return this.resourceLoader.getResource(filename + XML_SUFFIX);
-	}
-
 	/**
 	 * Refresh the PropertiesHolder for the given bundle filename.
 	 * <p>The holder can be {@code null} if not cached before, or a timed-out cache entry
@@ -498,6 +459,45 @@ public class ReloadableResourceBundleMessageSource extends AbstractResourceBased
 		return propHolder;
 	}
 
+	/**
+	 * Resolve the specified bundle {@code filename} into a concrete {@link Resource},
+	 * potentially checking multiple sources or file extensions.
+	 * <p>If no suitable concrete {@code Resource} can be resolved, this method
+	 * returns a {@code Resource} for which {@link Resource#exists()} returns
+	 * {@code false}, which gets subsequently ignored.
+	 * <p>This can be leveraged to check the last modification timestamp or to load
+	 * properties from alternative sources &mdash; for example, from an XML BLOB
+	 * in a database, or from properties serialized using a custom format such as
+	 * JSON.
+	 * <p>The default implementation delegates to the configured
+	 * {@link #setResourceLoader(ResourceLoader) ResourceLoader} to resolve
+	 * resources, first checking for an existing {@code Resource} with a
+	 * {@code .properties} extension, and otherwise returning a {@code Resource}
+	 * with a {@code .xml} extension.
+	 * <p>When overriding this method, {@link #loadProperties(Resource, String)}
+	 * <strong>must</strong> be capable of loading properties from any type of
+	 * {@code Resource} returned by this method. As a consequence, implementors
+	 * are strongly encouraged to also override {@code loadProperties()}.
+	 * <p>As an alternative to overriding this method, you can configure a
+	 * {@link #setPropertiesPersister(PropertiesPersister) PropertiesPersister}
+	 * that is capable of dealing with all resources returned by this method.
+	 * Please note, however, that the default {@code loadProperties()} implementation
+	 * uses {@link PropertiesPersister#loadFromXml(Properties, InputStream) loadFromXml}
+	 * for XML resources and otherwise uses the two
+	 * {@link PropertiesPersister#load(Properties, InputStream) load} methods
+	 * for other types of resources.
+	 * @param filename the bundle filename (basename + Locale)
+	 * @return the {@code Resource} to use
+	 * @since 6.1
+	 */
+	protected Resource determineResource(String filename) {
+		Resource propertiesResource = this.resourceLoader.getResource(filename + PROPERTIES_SUFFIX);
+		if (propertiesResource.exists()) {
+			return propertiesResource;
+		}
+		return this.resourceLoader.getResource(filename + XML_SUFFIX);
+	}
+
 	/**
 	 * Load the properties from the given resource.
 	 * @param resource the resource to load from