src/java.base/share/classes/java/net/URLDecoder.java

@@ -79,10 +79,16 @@
  * @since   1.2
  */
 
 public class URLDecoder {
 
+    /**
+     * Do not call.
+     */
+    @Deprecated(since="16", forRemoval=true)
+    public URLDecoder() {}
+
     // The platform default encoding
     static String dfltEncName = URLEncoder.dfltEncName;
 
     /**
      * Decodes a {@code x-www-form-urlencoded} string.