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

rev 51919 : 8215281: Use String.isEmpty() when applicable in java.base
Reviewed-by: dfuchs, alanb

@@ -437,11 +437,11 @@
             if (chc.reservedServerCerts != null &&
                     !chc.handshakeSession.useExtendedMasterSecret) {
                 // It is not necessary to check the certificate update if
                 // endpoint identification is enabled.
                 String identityAlg = chc.sslConfig.identificationProtocol;
-                if ((identityAlg == null || identityAlg.length() == 0) &&
+                if ((identityAlg == null || identityAlg.isEmpty()) &&
                         !isIdentityEquivalent(x509Certs[0],
                                 chc.reservedServerCerts[0])) {
                     throw chc.conContext.fatal(Alert.BAD_CERTIFICATE,
                             "server certificate change is restricted " +
                             "during renegotiation");