8370368: Apply java.io.Serial annotations in java.security.jgss

src/java.security.jgss/share/classes/sun/security/jgss/krb5/Krb5Context.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2024, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2025, 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
@@ -37,6 +37,7 @@
 import java.io.IOException;
 import java.io.ObjectInputStream;
 import java.io.OutputStream;
+import java.io.Serial;
 import java.security.*;
 import javax.security.auth.Subject;
 import javax.security.auth.kerberos.KerberosCredMessage;
@@ -1332,6 +1333,7 @@ GSSCaller getCaller() {
      * The session key returned by inquireSecContext(KRB5_INQ_SSPI_SESSION_KEY)
      */
     static class KerberosSessionKey implements Key {
+        @Serial
         private static final long serialVersionUID = 699307378954123869L;
 
         @SuppressWarnings("serial") // Not statically typed as Serializable

src/java.security.jgss/share/classes/sun/security/krb5/Asn1Exception.java

@@ -30,8 +30,11 @@
 
 package sun.security.krb5;
 
+import java.io.Serial;
+
 public class Asn1Exception extends KrbException {
 
+    @Serial
     private static final long serialVersionUID = 8291288984575084132L;
 
     public Asn1Exception(int i) {

src/java.security.jgss/share/classes/sun/security/krb5/KrbCryptoException.java

@@ -30,13 +30,16 @@
 
 package sun.security.krb5;
 
+import java.io.Serial;
+
 /**
  * KrbCryptoException is a wrapper exception for exceptions thrown by JCE.
  *
  * @author Yanni Zhang
  */
 public class KrbCryptoException extends KrbException {
 
+    @Serial
     private static final long serialVersionUID = -1657367919979982250L;
 
     public KrbCryptoException(String s) {

src/java.security.jgss/share/classes/sun/security/krb5/KrbException.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2023, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2025, 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
@@ -31,13 +31,15 @@
 
 package sun.security.krb5;
 
+import java.io.Serial;
 import java.util.Objects;
 
 import sun.security.krb5.internal.Krb5;
 import sun.security.krb5.internal.KRBError;
 
 public class KrbException extends Exception {
 
+    @Serial
     private static final long serialVersionUID = -4993302876451928596L;
 
     private int returnCode;

src/java.security.jgss/share/classes/sun/security/krb5/RealmException.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2025, 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
@@ -31,8 +31,11 @@
 
 package sun.security.krb5;
 
+import java.io.Serial;
+
 public class RealmException extends KrbException {
 
+    @Serial
     private static final long serialVersionUID = -9100385213693792864L;
 
     public RealmException(int i) {

src/java.security.jgss/share/classes/sun/security/krb5/internal/KRBError.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2024, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2025, 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
@@ -40,6 +40,7 @@
 import sun.security.util.*;
 import java.io.IOException;
 import java.io.ObjectInputStream;
+import java.io.Serial;
 import java.math.BigInteger;
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -85,7 +86,8 @@
  */
 
 public class KRBError implements java.io.Serializable {
-    static final long serialVersionUID = 3643809337475284503L;
+    @Serial
+    private static final long serialVersionUID = 3643809337475284503L;
 
     private transient int pvno;
     private transient int msgType;
@@ -123,6 +125,7 @@ private void readObject(ObjectInputStream is)
         }
     }
 
+    @Serial
     private void writeObject(ObjectOutputStream os)
             throws IOException {
         try {

src/java.security.jgss/share/classes/sun/security/krb5/internal/KdcErrException.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2004, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2025, 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
@@ -31,8 +31,11 @@
 
 package sun.security.krb5.internal;
 
+import java.io.Serial;
+
 public class KdcErrException extends sun.security.krb5.KrbException {
 
+    @Serial
     private static final long serialVersionUID = -8788186031117310306L;
 
     public KdcErrException(int i) {

src/java.security.jgss/share/classes/sun/security/krb5/internal/KrbApErrException.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2003, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2025, 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
@@ -31,8 +31,11 @@
 
 package sun.security.krb5.internal;
 
+import java.io.Serial;
+
 public class KrbApErrException extends sun.security.krb5.KrbException {
 
+    @Serial
     private static final long serialVersionUID = 7545264413323118315L;
 
     public KrbApErrException(int i) {

src/java.security.jgss/share/classes/sun/security/krb5/internal/KrbErrException.java

@@ -30,8 +30,11 @@
 
 package sun.security.krb5.internal;
 
+import java.io.Serial;
+
 public class KrbErrException extends sun.security.krb5.KrbException {
 
+    @Serial
     private static final long serialVersionUID = 2186533836785448317L;
 
     public KrbErrException(int i) {

src/java.security.jgss/windows/classes/sun/security/krb5/internal/tools/Ktab.java

@@ -83,7 +83,7 @@ public static void main(String[] args) {
 
     private static class ExitException extends RuntimeException {
         @java.io.Serial
-        static final long serialVersionUID = 0L;
+        private static final long serialVersionUID = 0L;
         private final int errorCode;
         public ExitException(int errorCode) {
             this.errorCode = errorCode;