8259069: Fields could be final

Reviewed-by: wetmore

src/java.base/share/classes/sun/security/ssl/DHClientKeyExchange.java

@@ -67,7 +67,7 @@ final class DHClientKeyExchange {
      */
     private static final
             class DHClientKeyExchangeMessage extends HandshakeMessage {
-        private byte[] y;        // 1 to 2^16 - 1 bytes
+        private final byte[] y;        // 1 to 2^16 - 1 bytes
 
         DHClientKeyExchangeMessage(
                 HandshakeContext handshakeContext) throws IOException {

src/java.base/share/classes/sun/security/ssl/EphemeralKeyManager.java

@@ -109,7 +109,7 @@ final class EphemeralKeyManager {
 
         private KeyPair keyPair;
         private int uses;
-        private long expirationTime;
+        private final long expirationTime;
 
         private EphemeralKeyPair(KeyPair keyPair) {
             this.keyPair = keyPair;

src/java.base/share/classes/sun/security/ssl/HelloCookieManager.java

@@ -123,8 +123,8 @@ abstract class HelloCookieManager {
 
         final SecureRandom secureRandom;
         private int               cookieVersion;  // allow to wrap, version + sequence
-        private byte[]      cookieSecret;
-        private byte[]      legacySecret;
+        private final byte[]      cookieSecret;
+        private final byte[]      legacySecret;
 
         private final ReentrantLock d10ManagerLock = new ReentrantLock();
 

src/java.base/share/classes/sun/security/ssl/SSLAlgorithmConstraints.java

@@ -225,7 +225,7 @@ final class SSLAlgorithmConstraints implements AlgorithmConstraints {
     private static class SupportedSignatureAlgorithmConstraints
                                     implements AlgorithmConstraints {
         // supported signature algorithms
-        private String[] supportedAlgorithms;
+        private final String[] supportedAlgorithms;
 
         SupportedSignatureAlgorithmConstraints(String[] supportedAlgorithms) {
             if (supportedAlgorithms != null) {

src/java.base/share/classes/sun/security/ssl/SSLCipher.java

@@ -411,7 +411,7 @@ enum SSLCipher {
     private static final HashMap<String, Long> cipherLimits = new HashMap<>();
 
     // Keywords found on the jdk.tls.keyLimits security property.
-    final static String tag[] = {"KEYUPDATE"};
+    final static String[] tag = {"KEYUPDATE"};
 
     static  {
         final long max = 4611686018427387904L; // 2^62
@@ -424,12 +424,12 @@ enum SSLCipher {
         });
 
         if (prop != null) {
-            String propvalue[] = prop.split(",");
+            String[] propvalue = prop.split(",");
 
             for (String entry : propvalue) {
                 int index;
                 // If this is not a UsageLimit, goto to next entry.
-                String values[] = entry.trim().toUpperCase().split(" ");
+                String[] values = entry.trim().toUpperCase().split(" ");
 
                 if (values[1].contains(tag[0])) {
                     index = 0;

src/java.base/share/classes/sun/security/ssl/SSLConfiguration.java

@@ -434,7 +434,7 @@ final class SSLConfiguration implements Cloneable {
     //
     // See Effective Java Second Edition: Item 71.
     private static final class CustomizedClientSignatureSchemes {
-        private static List<SignatureScheme> signatureSchemes =
+        private static final List<SignatureScheme> signatureSchemes =
                 getCustomizedSignatureScheme("jdk.tls.client.SignatureSchemes");
     }
 
@@ -442,7 +442,7 @@ final class SSLConfiguration implements Cloneable {
     //
     // See Effective Java Second Edition: Item 71.
     private static final class CustomizedServerSignatureSchemes {
-        private static List<SignatureScheme> signatureSchemes =
+        private static final List<SignatureScheme> signatureSchemes =
                 getCustomizedSignatureScheme("jdk.tls.server.SignatureSchemes");
     }
 

src/java.base/share/classes/sun/security/ssl/SSLEngineOutputRecord.java

@@ -371,7 +371,8 @@ final class SSLEngineOutputRecord extends OutputRecord implements SSLRecord {
     }
 
     final class HandshakeFragment {
-        private LinkedList<RecordMemo> handshakeMemos = new LinkedList<>();
+        private final LinkedList<RecordMemo> handshakeMemos =
+                new LinkedList<>();
 
         void queueUpFragment(byte[] source,
                 int offset, int length) throws IOException {

src/java.base/share/classes/sun/security/ssl/SSLExtensions.java

@@ -38,7 +38,7 @@ import sun.security.util.HexDumpEncoder;
  */
 final class SSLExtensions {
     private final HandshakeMessage handshakeMessage;
-    private Map<SSLExtension, byte[]> extMap = new LinkedHashMap<>();
+    private final Map<SSLExtension, byte[]> extMap = new LinkedHashMap<>();
     private int encodedLength;
 
     // Extension map for debug logging

src/java.base/share/classes/sun/security/ssl/SSLKeyExchange.java

@@ -265,78 +265,78 @@ final class SSLKeyExchange implements SSLKeyAgreementGenerator,
     }
 
     private static class SSLKeyExRSA {
-        private static SSLKeyExchange KE = new SSLKeyExchange(
+        private static final SSLKeyExchange KE = new SSLKeyExchange(
                 List.of(X509Authentication.RSA), T12KeyAgreement.RSA);
     }
 
     private static class SSLKeyExRSAExport {
-        private static SSLKeyExchange KE = new SSLKeyExchange(
+        private static final SSLKeyExchange KE = new SSLKeyExchange(
                 List.of(X509Authentication.RSA), T12KeyAgreement.RSA_EXPORT);
     }
 
     private static class SSLKeyExDHEDSS {
-        private static SSLKeyExchange KE = new SSLKeyExchange(
+        private static final SSLKeyExchange KE = new SSLKeyExchange(
                 List.of(X509Authentication.DSA), T12KeyAgreement.DHE);
     }
 
     private static class SSLKeyExDHEDSSExport {
-        private static SSLKeyExchange KE = new SSLKeyExchange(
+        private static final SSLKeyExchange KE = new SSLKeyExchange(
                 List.of(X509Authentication.DSA), T12KeyAgreement.DHE_EXPORT);
     }
 
     private static class SSLKeyExDHERSA {
-        private static SSLKeyExchange KE = new SSLKeyExchange(
+        private static final SSLKeyExchange KE = new SSLKeyExchange(
                 List.of(X509Authentication.RSA), T12KeyAgreement.DHE);
     }
 
     private static class SSLKeyExDHERSAOrPSS {
-        private static SSLKeyExchange KE = new SSLKeyExchange(
+        private static final SSLKeyExchange KE = new SSLKeyExchange(
                 List.of(X509Authentication.RSA_OR_PSS), T12KeyAgreement.DHE);
     }
 
     private static class SSLKeyExDHERSAExport {
-        private static SSLKeyExchange KE = new SSLKeyExchange(
+        private static final SSLKeyExchange KE = new SSLKeyExchange(
                 List.of(X509Authentication.RSA), T12KeyAgreement.DHE_EXPORT);
     }
 
     private static class SSLKeyExDHANON {
-        private static SSLKeyExchange KE = new SSLKeyExchange(
+        private static final SSLKeyExchange KE = new SSLKeyExchange(
                 null, T12KeyAgreement.DHE);
     }
 
     private static class SSLKeyExDHANONExport {
-        private static SSLKeyExchange KE = new SSLKeyExchange(
+        private static final SSLKeyExchange KE = new SSLKeyExchange(
                 null, T12KeyAgreement.DHE_EXPORT);
     }
 
     private static class SSLKeyExECDHECDSA {
-        private static SSLKeyExchange KE = new SSLKeyExchange(
+        private static final SSLKeyExchange KE = new SSLKeyExchange(
                 List.of(X509Authentication.EC), T12KeyAgreement.ECDH);
     }
 
     private static class SSLKeyExECDHRSA {
-        private static SSLKeyExchange KE = new SSLKeyExchange(
+        private static final SSLKeyExchange KE = new SSLKeyExchange(
                 List.of(X509Authentication.EC), T12KeyAgreement.ECDH);
     }
 
     private static class SSLKeyExECDHEECDSA {
-        private static SSLKeyExchange KE = new SSLKeyExchange(
+        private static final SSLKeyExchange KE = new SSLKeyExchange(
                 List.of(X509Authentication.EC, X509Authentication.EDDSA),
                 T12KeyAgreement.ECDHE);
     }
 
     private static class SSLKeyExECDHERSA {
-        private static SSLKeyExchange KE = new SSLKeyExchange(
+        private static final SSLKeyExchange KE = new SSLKeyExchange(
                 List.of(X509Authentication.RSA), T12KeyAgreement.ECDHE);
     }
 
     private static class SSLKeyExECDHERSAOrPSS {
-        private static SSLKeyExchange KE = new SSLKeyExchange(
+        private static final SSLKeyExchange KE = new SSLKeyExchange(
                 List.of(X509Authentication.RSA_OR_PSS), T12KeyAgreement.ECDHE);
     }
 
     private static class SSLKeyExECDHANON {
-        private static SSLKeyExchange KE = new SSLKeyExchange(
+        private static final SSLKeyExchange KE = new SSLKeyExchange(
                 null, T12KeyAgreement.ECDHE);
     }
 

src/java.base/share/classes/sun/security/ssl/SSLSessionImpl.java

@@ -125,7 +125,7 @@ final class SSLSessionImpl extends ExtendedSSLSession {
     /*
      * Use of session caches is globally enabled/disabled.
      */
-    private static boolean      defaultRejoinable = true;
+    private static final boolean defaultRejoinable = true;
 
     // server name indication
     final SNIServerName         serverNameIndication;

src/java.base/share/classes/sun/security/ssl/SunJSSE.java

@@ -56,7 +56,7 @@ public class SunJSSE extends java.security.Provider {
     @java.io.Serial
     private static final long serialVersionUID = 3231825739635378733L;
 
-    private static String info = "Sun JSSE provider" +
+    private static final String info = "Sun JSSE provider" +
         "(PKCS12, SunX509/PKIX key/trust factories, " +
         "SSLv3/TLSv1/TLSv1.1/TLSv1.2/TLSv1.3/DTLSv1.0/DTLSv1.2)";
 

src/java.base/share/classes/sun/security/ssl/SunX509KeyManagerImpl.java

@@ -87,7 +87,7 @@ final class SunX509KeyManagerImpl extends X509ExtendedKeyManager {
      * The credentials from the KeyStore as
      * Map: String(alias) -> X509Credentials(credentials)
      */
-    private Map<String,X509Credentials> credentialsMap;
+    private final Map<String,X509Credentials> credentialsMap;
 
     /*
      * Cached server aliases for the case issuers == null.

src/java.base/share/classes/sun/security/ssl/TrustStoreManager.java

@@ -149,7 +149,7 @@ final class TrustStoreManager {
                         for (String fileName : fileNames) {
                             File f = new File(fileName);
                             if (f.isFile() && f.canRead()) {
-                                temporaryName = fileName;;
+                                temporaryName = fileName;
                                 temporaryFile = f;
                                 temporaryTime = f.lastModified();