src/java.base/share/classes/java/util/ResourceBundle.java

@@ -2494,33 +2494,29 @@
          * this order. This <code>List</code> is {@linkplain
          * Collections#unmodifiableList(List) unmodifiable}.
          *
          * @see #getFormats(String)
          */
-        public static final List<String> FORMAT_DEFAULT
-            = Collections.unmodifiableList(Arrays.asList("java.class",
-                                                         "java.properties"));
+        public static final List<String> FORMAT_DEFAULT = List.of("java.class", "java.properties");
 
         /**
          * The class-only format <code>List</code> containing
          * <code>"java.class"</code>. This <code>List</code> is {@linkplain
          * Collections#unmodifiableList(List) unmodifiable}.
          *
          * @see #getFormats(String)
          */
-        public static final List<String> FORMAT_CLASS
-            = Collections.unmodifiableList(Arrays.asList("java.class"));
+        public static final List<String> FORMAT_CLASS = List.of("java.class");
 
         /**
          * The properties-only format <code>List</code> containing
          * <code>"java.properties"</code>. This <code>List</code> is
          * {@linkplain Collections#unmodifiableList(List) unmodifiable}.
          *
          * @see #getFormats(String)
          */
-        public static final List<String> FORMAT_PROPERTIES
-            = Collections.unmodifiableList(Arrays.asList("java.properties"));
+        public static final List<String> FORMAT_PROPERTIES = List.of("java.properties");
 
         /**
          * The time-to-live constant for not caching loaded resource bundle
          * instances.
          *