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

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

*** 427,437 ****
          if (signedCert == null) {
              throw new CertificateEncodingException("Uninitialized certificate");
          }
          // Verify the signature ...
          Signature sigVerf = null;
!         if (sigProvider.length() == 0) {
              sigVerf = Signature.getInstance(algId.getName());
          } else {
              sigVerf = Signature.getInstance(algId.getName(), sigProvider);
          }
  
--- 427,437 ----
          if (signedCert == null) {
              throw new CertificateEncodingException("Uninitialized certificate");
          }
          // Verify the signature ...
          Signature sigVerf = null;
!         if (sigProvider.isEmpty()) {
              sigVerf = Signature.getInstance(algId.getName());
          } else {
              sigVerf = Signature.getInstance(algId.getName(), sigProvider);
          }
  
*** 596,606 ****
          try {
              if (readOnly)
                  throw new CertificateEncodingException(
                                "cannot over-write existing certificate");
              Signature sigEngine = null;
!             if ((provider == null) || (provider.length() == 0))
                  sigEngine = Signature.getInstance(algorithm);
              else
                  sigEngine = Signature.getInstance(algorithm, provider);
  
              sigEngine.initSign(key);
--- 596,606 ----
          try {
              if (readOnly)
                  throw new CertificateEncodingException(
                                "cannot over-write existing certificate");
              Signature sigEngine = null;
!             if (provider == null || provider.isEmpty())
                  sigEngine = Signature.getInstance(algorithm);
              else
                  sigEngine = Signature.getInstance(algorithm, provider);
  
              sigEngine.initSign(key);