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

@@ -501,11 +501,11 @@
 {
 
     // Note: Comments containing the word "ASSERT" indicate places where a
     // throw of an InternalError should be replaced by an appropriate assertion
     // statement once asserts are enabled in the build.
-
+    @java.io.Serial
     static final long serialVersionUID = -6052424284110960213L;
 
 
     // -- Properties and components of this instance --
 

@@ -1775,10 +1775,11 @@
      * method of the given object-output stream is invoked. </p>
      *
      * @param  os  The object-output stream to which this object
      *             is to be written
      */
+    @java.io.Serial
     private void writeObject(ObjectOutputStream os)
         throws IOException
     {
         defineString();
         os.defaultWriteObject();        // Writes the string field only

@@ -1792,10 +1793,11 @@
      * then parsed in the usual way.
      *
      * @param  is  The object-input stream from which this object
      *             is being read
      */
+    @java.io.Serial
     private void readObject(ObjectInputStream is)
         throws ClassNotFoundException, IOException
     {
         port = -1;                      // Argh
         is.defaultReadObject();