8310999: Add @SInCE info in jdk.jsobject files

Reviewed-by: lancea, joehw, bpb, iris, prr

Author: Roger Riggs

src/jdk.jsobject/share/classes/netscape/javascript/JSException.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2006, 2023, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -29,6 +29,7 @@
  * Thrown when an exception is raised in the JavaScript engine. This is merely
  * a marker class to indicate an exception relating to the JavaScript
  * interface.
+ * @since 1.5
  */
 public class JSException extends RuntimeException {
     private static final long serialVersionUID = 2778103758223661489L;

src/jdk.jsobject/share/classes/netscape/javascript/JSObject.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006, 2022, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2006, 2023, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -25,11 +25,6 @@
 
 package netscape.javascript;
 
-import java.security.AccessController;
-import java.security.PrivilegedAction;
-import java.util.Iterator;
-import java.util.ServiceLoader;
-
 /**
  * <p>
  * Allows Java code to manipulate JavaScript objects.
@@ -48,9 +43,8 @@
  * converted to Java data types. Certain data passed to the JavaScript
  * engine is converted to JavaScript data types.
  * </p>
- *
+ * @since 1.5
  */
-@SuppressWarnings("deprecation")
 public abstract class JSObject {
     /**
      * Constructs a new JSObject. Users should neither call this method nor