src/java.base/share/classes/sun/security/x509/X509CertImpl.java

rev 52979 : 8215281: Use String.isEmpty() when applicable in java.base
Reviewed-by: TBD

@@ -427,11 +427,11 @@
         if (signedCert == null) {
             throw new CertificateEncodingException("Uninitialized certificate");
         }
         // Verify the signature ...
         Signature sigVerf = null;
-        if (sigProvider.length() == 0) {
+        if (sigProvider.isEmpty()) {
             sigVerf = Signature.getInstance(algId.getName());
         } else {
             sigVerf = Signature.getInstance(algId.getName(), sigProvider);
         }
 

@@ -596,11 +596,11 @@
         try {
             if (readOnly)
                 throw new CertificateEncodingException(
                               "cannot over-write existing certificate");
             Signature sigEngine = null;
-            if ((provider == null) || (provider.length() == 0))
+            if (provider == null || provider.isEmpty())
                 sigEngine = Signature.getInstance(algorithm);
             else
                 sigEngine = Signature.getInstance(algorithm, provider);
 
             sigEngine.initSign(key);