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

*** 50,59 ****
--- 50,64 ----
   * @see     java.net.URL#URL(java.lang.String, java.lang.String, int, java.lang.String)
   * @since   1.0
   */
  public abstract class URLStreamHandler {
      /**
+      * Constructor for subclasses to call.
+      */
+     public URLStreamHandler() {}
+ 
+     /**
       * Opens a connection to the object referenced by the
       * {@code URL} argument.
       * This method should be overridden by a subclass.
       *
       * <p>If for the handler's protocol (such as HTTP or JAR), there