src/java.base/share/classes/java/security/GuardedObject.java

@@ -42,10 +42,11 @@
  * @see Guard
  * @see Permission
  *
  * @author Roland Schemers
  * @author Li Gong
+ * @since 1.2
  */
 
 public class GuardedObject implements java.io.Serializable {
 
     private static final long serialVersionUID = -5240450096227834308L;