src/share/classes/javax/sound/sampled/AudioFormat.java

@@ -394,14 +394,15 @@
      *         returned.
      *
      * @see #getProperty(String)
      * @since 1.5
      */
+    @SuppressWarnings("unchecked") // Cast of result of clone.
     public Map<String,Object> properties() {
         Map<String,Object> ret;
         if (properties == null) {
-            ret = new HashMap<String,Object>(0);
+            ret = new HashMap<>(0);
         } else {
             ret = (Map<String,Object>) (properties.clone());
         }
         return Collections.unmodifiableMap(ret);
     }