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src/java.base/share/classes/java/security/MessageDigest.java

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

@@ -235,11 +235,11 @@
      */
     public static MessageDigest getInstance(String algorithm, String provider)
         throws NoSuchAlgorithmException, NoSuchProviderException
     {
         Objects.requireNonNull(algorithm, "null algorithm name");
-        if (provider == null || provider.length() == 0)
+        if (provider == null || provider.isEmpty())
             throw new IllegalArgumentException("missing provider");
         Object[] objs = Security.getImpl(algorithm, "MessageDigest", provider);
         if (objs[0] instanceof MessageDigest) {
             MessageDigest md = (MessageDigest)objs[0];
             md.provider = (Provider)objs[1];
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