src/java.base/share/classes/com/sun/net/ssl/KeyManagerFactory.java

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

*** 151,161 ****
       */
      public static final KeyManagerFactory getInstance(String algorithm,
                                                   String provider)
          throws NoSuchAlgorithmException, NoSuchProviderException
      {
!         if (provider == null || provider.length() == 0)
              throw new IllegalArgumentException("missing provider");
          Object[] objs = SSLSecurity.getImpl(algorithm, "KeyManagerFactory",
                                              provider);
          return new KeyManagerFactory((KeyManagerFactorySpi)objs[0],
                                          (Provider)objs[1], algorithm);
--- 151,161 ----
       */
      public static final KeyManagerFactory getInstance(String algorithm,
                                                   String provider)
          throws NoSuchAlgorithmException, NoSuchProviderException
      {
!         if (provider == null || provider.isEmpty())
              throw new IllegalArgumentException("missing provider");
          Object[] objs = SSLSecurity.getImpl(algorithm, "KeyManagerFactory",
                                              provider);
          return new KeyManagerFactory((KeyManagerFactorySpi)objs[0],
                                          (Provider)objs[1], algorithm);